1 /* 2 * Copyright (c) 1999, 2019, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #include "precompiled.hpp" 26 #include "asm/macroAssembler.hpp" 27 #include "ci/ciUtilities.inline.hpp" 28 #include "classfile/systemDictionary.hpp" 29 #include "classfile/vmSymbols.hpp" 30 #include "compiler/compileBroker.hpp" 31 #include "compiler/compileLog.hpp" 32 #include "gc/shared/barrierSet.hpp" 33 #include "jfr/support/jfrIntrinsics.hpp" 34 #include "memory/resourceArea.hpp" 35 #include "oops/klass.inline.hpp" 36 #include "oops/objArrayKlass.hpp" 37 #include "opto/addnode.hpp" 38 #include "opto/arraycopynode.hpp" 39 #include "opto/c2compiler.hpp" 40 #include "opto/callGenerator.hpp" 41 #include "opto/castnode.hpp" 42 #include "opto/cfgnode.hpp" 43 #include "opto/convertnode.hpp" 44 #include "opto/countbitsnode.hpp" 45 #include "opto/intrinsicnode.hpp" 46 #include "opto/idealKit.hpp" 47 #include "opto/mathexactnode.hpp" 48 #include "opto/movenode.hpp" 49 #include "opto/mulnode.hpp" 50 #include "opto/narrowptrnode.hpp" 51 #include "opto/opaquenode.hpp" 52 #include "opto/parse.hpp" 53 #include "opto/runtime.hpp" 54 #include "opto/rootnode.hpp" 55 #include "opto/subnode.hpp" 56 #include "prims/nativeLookup.hpp" 57 #include "prims/unsafe.hpp" 58 #include "runtime/objectMonitor.hpp" 59 #include "runtime/sharedRuntime.hpp" 60 #include "utilities/macros.hpp" 61 62 63 class LibraryIntrinsic : public InlineCallGenerator { 64 // Extend the set of intrinsics known to the runtime: 65 public: 66 private: 67 bool _is_virtual; 68 bool _does_virtual_dispatch; 69 int8_t _predicates_count; // Intrinsic is predicated by several conditions 70 int8_t _last_predicate; // Last generated predicate 71 vmIntrinsics::ID _intrinsic_id; 72 73 public: 74 LibraryIntrinsic(ciMethod* m, bool is_virtual, int predicates_count, bool does_virtual_dispatch, vmIntrinsics::ID id) 75 : InlineCallGenerator(m), 76 _is_virtual(is_virtual), 77 _does_virtual_dispatch(does_virtual_dispatch), 78 _predicates_count((int8_t)predicates_count), 79 _last_predicate((int8_t)-1), 80 _intrinsic_id(id) 81 { 82 } 83 virtual bool is_intrinsic() const { return true; } 84 virtual bool is_virtual() const { return _is_virtual; } 85 virtual bool is_predicated() const { return _predicates_count > 0; } 86 virtual int predicates_count() const { return _predicates_count; } 87 virtual bool does_virtual_dispatch() const { return _does_virtual_dispatch; } 88 virtual JVMState* generate(JVMState* jvms); 89 virtual Node* generate_predicate(JVMState* jvms, int predicate); 90 vmIntrinsics::ID intrinsic_id() const { return _intrinsic_id; } 91 }; 92 93 94 // Local helper class for LibraryIntrinsic: 95 class LibraryCallKit : public GraphKit { 96 private: 97 LibraryIntrinsic* _intrinsic; // the library intrinsic being called 98 Node* _result; // the result node, if any 99 int _reexecute_sp; // the stack pointer when bytecode needs to be reexecuted 100 101 const TypeOopPtr* sharpen_unsafe_type(Compile::AliasType* alias_type, const TypePtr *adr_type); 102 103 public: 104 LibraryCallKit(JVMState* jvms, LibraryIntrinsic* intrinsic) 105 : GraphKit(jvms), 106 _intrinsic(intrinsic), 107 _result(NULL) 108 { 109 // Check if this is a root compile. In that case we don't have a caller. 110 if (!jvms->has_method()) { 111 _reexecute_sp = sp(); 112 } else { 113 // Find out how many arguments the interpreter needs when deoptimizing 114 // and save the stack pointer value so it can used by uncommon_trap. 115 // We find the argument count by looking at the declared signature. 116 bool ignored_will_link; 117 ciSignature* declared_signature = NULL; 118 ciMethod* ignored_callee = caller()->get_method_at_bci(bci(), ignored_will_link, &declared_signature); 119 const int nargs = declared_signature->arg_size_for_bc(caller()->java_code_at_bci(bci())); 120 _reexecute_sp = sp() + nargs; // "push" arguments back on stack 121 } 122 } 123 124 virtual LibraryCallKit* is_LibraryCallKit() const { return (LibraryCallKit*)this; } 125 126 ciMethod* caller() const { return jvms()->method(); } 127 int bci() const { return jvms()->bci(); } 128 LibraryIntrinsic* intrinsic() const { return _intrinsic; } 129 vmIntrinsics::ID intrinsic_id() const { return _intrinsic->intrinsic_id(); } 130 ciMethod* callee() const { return _intrinsic->method(); } 131 132 bool try_to_inline(int predicate); 133 Node* try_to_predicate(int predicate); 134 135 void push_result() { 136 // Push the result onto the stack. 137 if (!stopped() && result() != NULL) { 138 BasicType bt = result()->bottom_type()->basic_type(); 139 push_node(bt, result()); 140 } 141 } 142 143 private: 144 void fatal_unexpected_iid(vmIntrinsics::ID iid) { 145 fatal("unexpected intrinsic %d: %s", iid, vmIntrinsics::name_at(iid)); 146 } 147 148 void set_result(Node* n) { assert(_result == NULL, "only set once"); _result = n; } 149 void set_result(RegionNode* region, PhiNode* value); 150 Node* result() { return _result; } 151 152 virtual int reexecute_sp() { return _reexecute_sp; } 153 154 // Helper functions to inline natives 155 Node* generate_guard(Node* test, RegionNode* region, float true_prob); 156 Node* generate_slow_guard(Node* test, RegionNode* region); 157 Node* generate_fair_guard(Node* test, RegionNode* region); 158 Node* generate_negative_guard(Node* index, RegionNode* region, 159 // resulting CastII of index: 160 Node* *pos_index = NULL); 161 Node* generate_limit_guard(Node* offset, Node* subseq_length, 162 Node* array_length, 163 RegionNode* region); 164 void generate_string_range_check(Node* array, Node* offset, 165 Node* length, bool char_count); 166 Node* generate_current_thread(Node* &tls_output); 167 Node* load_mirror_from_klass(Node* klass); 168 Node* load_klass_from_mirror_common(Node* mirror, bool never_see_null, 169 RegionNode* region, int null_path, 170 int offset); 171 Node* load_klass_from_mirror(Node* mirror, bool never_see_null, 172 RegionNode* region, int null_path) { 173 int offset = java_lang_Class::klass_offset_in_bytes(); 174 return load_klass_from_mirror_common(mirror, never_see_null, 175 region, null_path, 176 offset); 177 } 178 Node* load_array_klass_from_mirror(Node* mirror, bool never_see_null, 179 RegionNode* region, int null_path) { 180 int offset = java_lang_Class::array_klass_offset_in_bytes(); 181 return load_klass_from_mirror_common(mirror, never_see_null, 182 region, null_path, 183 offset); 184 } 185 Node* generate_access_flags_guard(Node* kls, 186 int modifier_mask, int modifier_bits, 187 RegionNode* region); 188 Node* generate_interface_guard(Node* kls, RegionNode* region); 189 Node* generate_array_guard(Node* kls, RegionNode* region) { 190 return generate_array_guard_common(kls, region, false, false); 191 } 192 Node* generate_non_array_guard(Node* kls, RegionNode* region) { 193 return generate_array_guard_common(kls, region, false, true); 194 } 195 Node* generate_objArray_guard(Node* kls, RegionNode* region) { 196 return generate_array_guard_common(kls, region, true, false); 197 } 198 Node* generate_non_objArray_guard(Node* kls, RegionNode* region) { 199 return generate_array_guard_common(kls, region, true, true); 200 } 201 Node* generate_array_guard_common(Node* kls, RegionNode* region, 202 bool obj_array, bool not_array); 203 Node* generate_virtual_guard(Node* obj_klass, RegionNode* slow_region); 204 CallJavaNode* generate_method_call(vmIntrinsics::ID method_id, 205 bool is_virtual = false, bool is_static = false); 206 CallJavaNode* generate_method_call_static(vmIntrinsics::ID method_id) { 207 return generate_method_call(method_id, false, true); 208 } 209 CallJavaNode* generate_method_call_virtual(vmIntrinsics::ID method_id) { 210 return generate_method_call(method_id, true, false); 211 } 212 Node * load_field_from_object(Node * fromObj, const char * fieldName, const char * fieldTypeString, bool is_exact, bool is_static, ciInstanceKlass * fromKls); 213 Node * field_address_from_object(Node * fromObj, const char * fieldName, const char * fieldTypeString, bool is_exact, bool is_static, ciInstanceKlass * fromKls); 214 215 Node* make_string_method_node(int opcode, Node* str1_start, Node* cnt1, Node* str2_start, Node* cnt2, StrIntrinsicNode::ArgEnc ae); 216 bool inline_string_compareTo(StrIntrinsicNode::ArgEnc ae); 217 bool inline_string_indexOf(StrIntrinsicNode::ArgEnc ae); 218 bool inline_string_indexOfI(StrIntrinsicNode::ArgEnc ae); 219 Node* make_indexOf_node(Node* src_start, Node* src_count, Node* tgt_start, Node* tgt_count, 220 RegionNode* region, Node* phi, StrIntrinsicNode::ArgEnc ae); 221 bool inline_string_indexOfChar(); 222 bool inline_string_equals(StrIntrinsicNode::ArgEnc ae); 223 bool inline_string_toBytesU(); 224 bool inline_string_getCharsU(); 225 bool inline_string_copy(bool compress); 226 bool inline_string_char_access(bool is_store); 227 Node* round_double_node(Node* n); 228 bool runtime_math(const TypeFunc* call_type, address funcAddr, const char* funcName); 229 bool inline_math_native(vmIntrinsics::ID id); 230 bool inline_math(vmIntrinsics::ID id); 231 bool inline_double_math(vmIntrinsics::ID id); 232 template <typename OverflowOp> 233 bool inline_math_overflow(Node* arg1, Node* arg2); 234 void inline_math_mathExact(Node* math, Node* test); 235 bool inline_math_addExactI(bool is_increment); 236 bool inline_math_addExactL(bool is_increment); 237 bool inline_math_multiplyExactI(); 238 bool inline_math_multiplyExactL(); 239 bool inline_math_multiplyHigh(); 240 bool inline_math_negateExactI(); 241 bool inline_math_negateExactL(); 242 bool inline_math_subtractExactI(bool is_decrement); 243 bool inline_math_subtractExactL(bool is_decrement); 244 bool inline_min_max(vmIntrinsics::ID id); 245 bool inline_notify(vmIntrinsics::ID id); 246 Node* generate_min_max(vmIntrinsics::ID id, Node* x, Node* y); 247 // This returns Type::AnyPtr, RawPtr, or OopPtr. 248 int classify_unsafe_addr(Node* &base, Node* &offset, BasicType type); 249 Node* make_unsafe_address(Node*& base, Node* offset, DecoratorSet decorators, BasicType type = T_ILLEGAL, bool can_cast = false); 250 251 typedef enum { Relaxed, Opaque, Volatile, Acquire, Release } AccessKind; 252 DecoratorSet mo_decorator_for_access_kind(AccessKind kind); 253 bool inline_unsafe_access(bool is_store, BasicType type, AccessKind kind, bool is_unaligned); 254 static bool klass_needs_init_guard(Node* kls); 255 bool inline_unsafe_allocate(); 256 bool inline_unsafe_newArray(bool uninitialized); 257 bool inline_unsafe_writeback0(); 258 bool inline_unsafe_writebackSync0(bool is_pre); 259 bool inline_unsafe_copyMemory(); 260 bool inline_native_currentThread(); 261 262 bool inline_native_time_funcs(address method, const char* funcName); 263 #ifdef JFR_HAVE_INTRINSICS 264 bool inline_native_classID(); 265 bool inline_native_getEventWriter(); 266 #endif 267 bool inline_native_Class_query(vmIntrinsics::ID id); 268 bool inline_native_subtype_check(); 269 bool inline_native_getLength(); 270 bool inline_array_copyOf(bool is_copyOfRange); 271 bool inline_array_equals(StrIntrinsicNode::ArgEnc ae); 272 bool inline_preconditions_checkIndex(); 273 void copy_to_clone(Node* obj, Node* alloc_obj, Node* obj_size, bool is_array); 274 bool inline_native_clone(bool is_virtual); 275 bool inline_native_Reflection_getCallerClass(); 276 // Helper function for inlining native object hash method 277 bool inline_native_hashcode(bool is_virtual, bool is_static); 278 bool inline_native_getClass(); 279 280 // Helper functions for inlining arraycopy 281 bool inline_arraycopy(); 282 AllocateArrayNode* tightly_coupled_allocation(Node* ptr, 283 RegionNode* slow_region); 284 JVMState* arraycopy_restore_alloc_state(AllocateArrayNode* alloc, int& saved_reexecute_sp); 285 void arraycopy_move_allocation_here(AllocateArrayNode* alloc, Node* dest, JVMState* saved_jvms, int saved_reexecute_sp, 286 uint new_idx); 287 288 typedef enum { LS_get_add, LS_get_set, LS_cmp_swap, LS_cmp_swap_weak, LS_cmp_exchange } LoadStoreKind; 289 bool inline_unsafe_load_store(BasicType type, LoadStoreKind kind, AccessKind access_kind); 290 bool inline_unsafe_fence(vmIntrinsics::ID id); 291 bool inline_onspinwait(); 292 bool inline_fp_conversions(vmIntrinsics::ID id); 293 bool inline_number_methods(vmIntrinsics::ID id); 294 bool inline_reference_get(); 295 bool inline_Class_cast(); 296 bool inline_aescrypt_Block(vmIntrinsics::ID id); 297 bool inline_cipherBlockChaining_AESCrypt(vmIntrinsics::ID id); 298 bool inline_electronicCodeBook_AESCrypt(vmIntrinsics::ID id); 299 bool inline_counterMode_AESCrypt(vmIntrinsics::ID id); 300 Node* inline_cipherBlockChaining_AESCrypt_predicate(bool decrypting); 301 Node* inline_electronicCodeBook_AESCrypt_predicate(bool decrypting); 302 Node* inline_counterMode_AESCrypt_predicate(); 303 Node* get_key_start_from_aescrypt_object(Node* aescrypt_object); 304 Node* get_original_key_start_from_aescrypt_object(Node* aescrypt_object); 305 bool inline_ghash_processBlocks(); 306 bool inline_base64_encodeBlock(); 307 bool inline_sha_implCompress(vmIntrinsics::ID id); 308 bool inline_digestBase_implCompressMB(int predicate); 309 bool inline_sha_implCompressMB(Node* digestBaseObj, ciInstanceKlass* instklass_SHA, 310 bool long_state, address stubAddr, const char *stubName, 311 Node* src_start, Node* ofs, Node* limit); 312 Node* get_state_from_sha_object(Node *sha_object); 313 Node* get_state_from_sha5_object(Node *sha_object); 314 Node* inline_digestBase_implCompressMB_predicate(int predicate); 315 bool inline_encodeISOArray(); 316 bool inline_updateCRC32(); 317 bool inline_updateBytesCRC32(); 318 bool inline_updateByteBufferCRC32(); 319 Node* get_table_from_crc32c_class(ciInstanceKlass *crc32c_class); 320 bool inline_updateBytesCRC32C(); 321 bool inline_updateDirectByteBufferCRC32C(); 322 bool inline_updateBytesAdler32(); 323 bool inline_updateByteBufferAdler32(); 324 bool inline_multiplyToLen(); 325 bool inline_hasNegatives(); 326 bool inline_squareToLen(); 327 bool inline_mulAdd(); 328 bool inline_montgomeryMultiply(); 329 bool inline_montgomerySquare(); 330 bool inline_vectorizedMismatch(); 331 bool inline_fma(vmIntrinsics::ID id); 332 bool inline_character_compare(vmIntrinsics::ID id); 333 bool inline_fp_min_max(vmIntrinsics::ID id); 334 335 bool inline_profileBoolean(); 336 bool inline_isCompileConstant(); 337 void clear_upper_avx() { 338 #ifdef X86 339 if (UseAVX >= 2) { 340 C->set_clear_upper_avx(true); 341 } 342 #endif 343 } 344 }; 345 346 //---------------------------make_vm_intrinsic---------------------------- 347 CallGenerator* Compile::make_vm_intrinsic(ciMethod* m, bool is_virtual) { 348 vmIntrinsics::ID id = m->intrinsic_id(); 349 assert(id != vmIntrinsics::_none, "must be a VM intrinsic"); 350 351 if (!m->is_loaded()) { 352 // Do not attempt to inline unloaded methods. 353 return NULL; 354 } 355 356 C2Compiler* compiler = (C2Compiler*)CompileBroker::compiler(CompLevel_full_optimization); 357 bool is_available = false; 358 359 { 360 // For calling is_intrinsic_supported and is_intrinsic_disabled_by_flag 361 // the compiler must transition to '_thread_in_vm' state because both 362 // methods access VM-internal data. 363 VM_ENTRY_MARK; 364 methodHandle mh(THREAD, m->get_Method()); 365 is_available = compiler != NULL && compiler->is_intrinsic_supported(mh, is_virtual) && 366 !C->directive()->is_intrinsic_disabled(mh) && 367 !vmIntrinsics::is_disabled_by_flags(mh); 368 369 } 370 371 if (is_available) { 372 assert(id <= vmIntrinsics::LAST_COMPILER_INLINE, "caller responsibility"); 373 assert(id != vmIntrinsics::_Object_init && id != vmIntrinsics::_invoke, "enum out of order?"); 374 return new LibraryIntrinsic(m, is_virtual, 375 vmIntrinsics::predicates_needed(id), 376 vmIntrinsics::does_virtual_dispatch(id), 377 (vmIntrinsics::ID) id); 378 } else { 379 return NULL; 380 } 381 } 382 383 //----------------------register_library_intrinsics----------------------- 384 // Initialize this file's data structures, for each Compile instance. 385 void Compile::register_library_intrinsics() { 386 // Nothing to do here. 387 } 388 389 JVMState* LibraryIntrinsic::generate(JVMState* jvms) { 390 LibraryCallKit kit(jvms, this); 391 Compile* C = kit.C; 392 int nodes = C->unique(); 393 #ifndef PRODUCT 394 if ((C->print_intrinsics() || C->print_inlining()) && Verbose) { 395 char buf[1000]; 396 const char* str = vmIntrinsics::short_name_as_C_string(intrinsic_id(), buf, sizeof(buf)); 397 tty->print_cr("Intrinsic %s", str); 398 } 399 #endif 400 ciMethod* callee = kit.callee(); 401 const int bci = kit.bci(); 402 403 // Try to inline the intrinsic. 404 if ((CheckIntrinsics ? callee->intrinsic_candidate() : true) && 405 kit.try_to_inline(_last_predicate)) { 406 const char *inline_msg = is_virtual() ? "(intrinsic, virtual)" 407 : "(intrinsic)"; 408 CompileTask::print_inlining_ul(callee, jvms->depth() - 1, bci, inline_msg); 409 if (C->print_intrinsics() || C->print_inlining()) { 410 C->print_inlining(callee, jvms->depth() - 1, bci, inline_msg); 411 } 412 C->gather_intrinsic_statistics(intrinsic_id(), is_virtual(), Compile::_intrinsic_worked); 413 if (C->log()) { 414 C->log()->elem("intrinsic id='%s'%s nodes='%d'", 415 vmIntrinsics::name_at(intrinsic_id()), 416 (is_virtual() ? " virtual='1'" : ""), 417 C->unique() - nodes); 418 } 419 // Push the result from the inlined method onto the stack. 420 kit.push_result(); 421 C->print_inlining_update(this); 422 return kit.transfer_exceptions_into_jvms(); 423 } 424 425 // The intrinsic bailed out 426 if (jvms->has_method()) { 427 // Not a root compile. 428 const char* msg; 429 if (callee->intrinsic_candidate()) { 430 msg = is_virtual() ? "failed to inline (intrinsic, virtual)" : "failed to inline (intrinsic)"; 431 } else { 432 msg = is_virtual() ? "failed to inline (intrinsic, virtual), method not annotated" 433 : "failed to inline (intrinsic), method not annotated"; 434 } 435 CompileTask::print_inlining_ul(callee, jvms->depth() - 1, bci, msg); 436 if (C->print_intrinsics() || C->print_inlining()) { 437 C->print_inlining(callee, jvms->depth() - 1, bci, msg); 438 } 439 } else { 440 // Root compile 441 ResourceMark rm; 442 stringStream msg_stream; 443 msg_stream.print("Did not generate intrinsic %s%s at bci:%d in", 444 vmIntrinsics::name_at(intrinsic_id()), 445 is_virtual() ? " (virtual)" : "", bci); 446 const char *msg = msg_stream.as_string(); 447 log_debug(jit, inlining)("%s", msg); 448 if (C->print_intrinsics() || C->print_inlining()) { 449 tty->print("%s", msg); 450 } 451 } 452 C->gather_intrinsic_statistics(intrinsic_id(), is_virtual(), Compile::_intrinsic_failed); 453 C->print_inlining_update(this); 454 return NULL; 455 } 456 457 Node* LibraryIntrinsic::generate_predicate(JVMState* jvms, int predicate) { 458 LibraryCallKit kit(jvms, this); 459 Compile* C = kit.C; 460 int nodes = C->unique(); 461 _last_predicate = predicate; 462 #ifndef PRODUCT 463 assert(is_predicated() && predicate < predicates_count(), "sanity"); 464 if ((C->print_intrinsics() || C->print_inlining()) && Verbose) { 465 char buf[1000]; 466 const char* str = vmIntrinsics::short_name_as_C_string(intrinsic_id(), buf, sizeof(buf)); 467 tty->print_cr("Predicate for intrinsic %s", str); 468 } 469 #endif 470 ciMethod* callee = kit.callee(); 471 const int bci = kit.bci(); 472 473 Node* slow_ctl = kit.try_to_predicate(predicate); 474 if (!kit.failing()) { 475 const char *inline_msg = is_virtual() ? "(intrinsic, virtual, predicate)" 476 : "(intrinsic, predicate)"; 477 CompileTask::print_inlining_ul(callee, jvms->depth() - 1, bci, inline_msg); 478 if (C->print_intrinsics() || C->print_inlining()) { 479 C->print_inlining(callee, jvms->depth() - 1, bci, inline_msg); 480 } 481 C->gather_intrinsic_statistics(intrinsic_id(), is_virtual(), Compile::_intrinsic_worked); 482 if (C->log()) { 483 C->log()->elem("predicate_intrinsic id='%s'%s nodes='%d'", 484 vmIntrinsics::name_at(intrinsic_id()), 485 (is_virtual() ? " virtual='1'" : ""), 486 C->unique() - nodes); 487 } 488 return slow_ctl; // Could be NULL if the check folds. 489 } 490 491 // The intrinsic bailed out 492 if (jvms->has_method()) { 493 // Not a root compile. 494 const char* msg = "failed to generate predicate for intrinsic"; 495 CompileTask::print_inlining_ul(kit.callee(), jvms->depth() - 1, bci, msg); 496 if (C->print_intrinsics() || C->print_inlining()) { 497 C->print_inlining(kit.callee(), jvms->depth() - 1, bci, msg); 498 } 499 } else { 500 // Root compile 501 ResourceMark rm; 502 stringStream msg_stream; 503 msg_stream.print("Did not generate intrinsic %s%s at bci:%d in", 504 vmIntrinsics::name_at(intrinsic_id()), 505 is_virtual() ? " (virtual)" : "", bci); 506 const char *msg = msg_stream.as_string(); 507 log_debug(jit, inlining)("%s", msg); 508 if (C->print_intrinsics() || C->print_inlining()) { 509 C->print_inlining_stream()->print("%s", msg); 510 } 511 } 512 C->gather_intrinsic_statistics(intrinsic_id(), is_virtual(), Compile::_intrinsic_failed); 513 return NULL; 514 } 515 516 bool LibraryCallKit::try_to_inline(int predicate) { 517 // Handle symbolic names for otherwise undistinguished boolean switches: 518 const bool is_store = true; 519 const bool is_compress = true; 520 const bool is_static = true; 521 const bool is_volatile = true; 522 523 if (!jvms()->has_method()) { 524 // Root JVMState has a null method. 525 assert(map()->memory()->Opcode() == Op_Parm, ""); 526 // Insert the memory aliasing node 527 set_all_memory(reset_memory()); 528 } 529 assert(merged_memory(), ""); 530 531 532 switch (intrinsic_id()) { 533 case vmIntrinsics::_hashCode: return inline_native_hashcode(intrinsic()->is_virtual(), !is_static); 534 case vmIntrinsics::_identityHashCode: return inline_native_hashcode(/*!virtual*/ false, is_static); 535 case vmIntrinsics::_getClass: return inline_native_getClass(); 536 537 case vmIntrinsics::_ceil: 538 case vmIntrinsics::_floor: 539 case vmIntrinsics::_rint: 540 case vmIntrinsics::_dsin: 541 case vmIntrinsics::_dcos: 542 case vmIntrinsics::_dtan: 543 case vmIntrinsics::_dabs: 544 case vmIntrinsics::_fabs: 545 case vmIntrinsics::_iabs: 546 case vmIntrinsics::_labs: 547 case vmIntrinsics::_datan2: 548 case vmIntrinsics::_dsqrt: 549 case vmIntrinsics::_dexp: 550 case vmIntrinsics::_dlog: 551 case vmIntrinsics::_dlog10: 552 case vmIntrinsics::_dpow: return inline_math_native(intrinsic_id()); 553 554 case vmIntrinsics::_min: 555 case vmIntrinsics::_max: return inline_min_max(intrinsic_id()); 556 557 case vmIntrinsics::_notify: 558 case vmIntrinsics::_notifyAll: 559 return inline_notify(intrinsic_id()); 560 561 case vmIntrinsics::_addExactI: return inline_math_addExactI(false /* add */); 562 case vmIntrinsics::_addExactL: return inline_math_addExactL(false /* add */); 563 case vmIntrinsics::_decrementExactI: return inline_math_subtractExactI(true /* decrement */); 564 case vmIntrinsics::_decrementExactL: return inline_math_subtractExactL(true /* decrement */); 565 case vmIntrinsics::_incrementExactI: return inline_math_addExactI(true /* increment */); 566 case vmIntrinsics::_incrementExactL: return inline_math_addExactL(true /* increment */); 567 case vmIntrinsics::_multiplyExactI: return inline_math_multiplyExactI(); 568 case vmIntrinsics::_multiplyExactL: return inline_math_multiplyExactL(); 569 case vmIntrinsics::_multiplyHigh: return inline_math_multiplyHigh(); 570 case vmIntrinsics::_negateExactI: return inline_math_negateExactI(); 571 case vmIntrinsics::_negateExactL: return inline_math_negateExactL(); 572 case vmIntrinsics::_subtractExactI: return inline_math_subtractExactI(false /* subtract */); 573 case vmIntrinsics::_subtractExactL: return inline_math_subtractExactL(false /* subtract */); 574 575 case vmIntrinsics::_arraycopy: return inline_arraycopy(); 576 577 case vmIntrinsics::_compareToL: return inline_string_compareTo(StrIntrinsicNode::LL); 578 case vmIntrinsics::_compareToU: return inline_string_compareTo(StrIntrinsicNode::UU); 579 case vmIntrinsics::_compareToLU: return inline_string_compareTo(StrIntrinsicNode::LU); 580 case vmIntrinsics::_compareToUL: return inline_string_compareTo(StrIntrinsicNode::UL); 581 582 case vmIntrinsics::_indexOfL: return inline_string_indexOf(StrIntrinsicNode::LL); 583 case vmIntrinsics::_indexOfU: return inline_string_indexOf(StrIntrinsicNode::UU); 584 case vmIntrinsics::_indexOfUL: return inline_string_indexOf(StrIntrinsicNode::UL); 585 case vmIntrinsics::_indexOfIL: return inline_string_indexOfI(StrIntrinsicNode::LL); 586 case vmIntrinsics::_indexOfIU: return inline_string_indexOfI(StrIntrinsicNode::UU); 587 case vmIntrinsics::_indexOfIUL: return inline_string_indexOfI(StrIntrinsicNode::UL); 588 case vmIntrinsics::_indexOfU_char: return inline_string_indexOfChar(); 589 590 case vmIntrinsics::_equalsL: return inline_string_equals(StrIntrinsicNode::LL); 591 case vmIntrinsics::_equalsU: return inline_string_equals(StrIntrinsicNode::UU); 592 593 case vmIntrinsics::_toBytesStringU: return inline_string_toBytesU(); 594 case vmIntrinsics::_getCharsStringU: return inline_string_getCharsU(); 595 case vmIntrinsics::_getCharStringU: return inline_string_char_access(!is_store); 596 case vmIntrinsics::_putCharStringU: return inline_string_char_access( is_store); 597 598 case vmIntrinsics::_compressStringC: 599 case vmIntrinsics::_compressStringB: return inline_string_copy( is_compress); 600 case vmIntrinsics::_inflateStringC: 601 case vmIntrinsics::_inflateStringB: return inline_string_copy(!is_compress); 602 603 case vmIntrinsics::_getReference: return inline_unsafe_access(!is_store, T_OBJECT, Relaxed, false); 604 case vmIntrinsics::_getBoolean: return inline_unsafe_access(!is_store, T_BOOLEAN, Relaxed, false); 605 case vmIntrinsics::_getByte: return inline_unsafe_access(!is_store, T_BYTE, Relaxed, false); 606 case vmIntrinsics::_getShort: return inline_unsafe_access(!is_store, T_SHORT, Relaxed, false); 607 case vmIntrinsics::_getChar: return inline_unsafe_access(!is_store, T_CHAR, Relaxed, false); 608 case vmIntrinsics::_getInt: return inline_unsafe_access(!is_store, T_INT, Relaxed, false); 609 case vmIntrinsics::_getLong: return inline_unsafe_access(!is_store, T_LONG, Relaxed, false); 610 case vmIntrinsics::_getFloat: return inline_unsafe_access(!is_store, T_FLOAT, Relaxed, false); 611 case vmIntrinsics::_getDouble: return inline_unsafe_access(!is_store, T_DOUBLE, Relaxed, false); 612 613 case vmIntrinsics::_putReference: return inline_unsafe_access( is_store, T_OBJECT, Relaxed, false); 614 case vmIntrinsics::_putBoolean: return inline_unsafe_access( is_store, T_BOOLEAN, Relaxed, false); 615 case vmIntrinsics::_putByte: return inline_unsafe_access( is_store, T_BYTE, Relaxed, false); 616 case vmIntrinsics::_putShort: return inline_unsafe_access( is_store, T_SHORT, Relaxed, false); 617 case vmIntrinsics::_putChar: return inline_unsafe_access( is_store, T_CHAR, Relaxed, false); 618 case vmIntrinsics::_putInt: return inline_unsafe_access( is_store, T_INT, Relaxed, false); 619 case vmIntrinsics::_putLong: return inline_unsafe_access( is_store, T_LONG, Relaxed, false); 620 case vmIntrinsics::_putFloat: return inline_unsafe_access( is_store, T_FLOAT, Relaxed, false); 621 case vmIntrinsics::_putDouble: return inline_unsafe_access( is_store, T_DOUBLE, Relaxed, false); 622 623 case vmIntrinsics::_getReferenceVolatile: return inline_unsafe_access(!is_store, T_OBJECT, Volatile, false); 624 case vmIntrinsics::_getBooleanVolatile: return inline_unsafe_access(!is_store, T_BOOLEAN, Volatile, false); 625 case vmIntrinsics::_getByteVolatile: return inline_unsafe_access(!is_store, T_BYTE, Volatile, false); 626 case vmIntrinsics::_getShortVolatile: return inline_unsafe_access(!is_store, T_SHORT, Volatile, false); 627 case vmIntrinsics::_getCharVolatile: return inline_unsafe_access(!is_store, T_CHAR, Volatile, false); 628 case vmIntrinsics::_getIntVolatile: return inline_unsafe_access(!is_store, T_INT, Volatile, false); 629 case vmIntrinsics::_getLongVolatile: return inline_unsafe_access(!is_store, T_LONG, Volatile, false); 630 case vmIntrinsics::_getFloatVolatile: return inline_unsafe_access(!is_store, T_FLOAT, Volatile, false); 631 case vmIntrinsics::_getDoubleVolatile: return inline_unsafe_access(!is_store, T_DOUBLE, Volatile, false); 632 633 case vmIntrinsics::_putReferenceVolatile: return inline_unsafe_access( is_store, T_OBJECT, Volatile, false); 634 case vmIntrinsics::_putBooleanVolatile: return inline_unsafe_access( is_store, T_BOOLEAN, Volatile, false); 635 case vmIntrinsics::_putByteVolatile: return inline_unsafe_access( is_store, T_BYTE, Volatile, false); 636 case vmIntrinsics::_putShortVolatile: return inline_unsafe_access( is_store, T_SHORT, Volatile, false); 637 case vmIntrinsics::_putCharVolatile: return inline_unsafe_access( is_store, T_CHAR, Volatile, false); 638 case vmIntrinsics::_putIntVolatile: return inline_unsafe_access( is_store, T_INT, Volatile, false); 639 case vmIntrinsics::_putLongVolatile: return inline_unsafe_access( is_store, T_LONG, Volatile, false); 640 case vmIntrinsics::_putFloatVolatile: return inline_unsafe_access( is_store, T_FLOAT, Volatile, false); 641 case vmIntrinsics::_putDoubleVolatile: return inline_unsafe_access( is_store, T_DOUBLE, Volatile, false); 642 643 case vmIntrinsics::_getShortUnaligned: return inline_unsafe_access(!is_store, T_SHORT, Relaxed, true); 644 case vmIntrinsics::_getCharUnaligned: return inline_unsafe_access(!is_store, T_CHAR, Relaxed, true); 645 case vmIntrinsics::_getIntUnaligned: return inline_unsafe_access(!is_store, T_INT, Relaxed, true); 646 case vmIntrinsics::_getLongUnaligned: return inline_unsafe_access(!is_store, T_LONG, Relaxed, true); 647 648 case vmIntrinsics::_putShortUnaligned: return inline_unsafe_access( is_store, T_SHORT, Relaxed, true); 649 case vmIntrinsics::_putCharUnaligned: return inline_unsafe_access( is_store, T_CHAR, Relaxed, true); 650 case vmIntrinsics::_putIntUnaligned: return inline_unsafe_access( is_store, T_INT, Relaxed, true); 651 case vmIntrinsics::_putLongUnaligned: return inline_unsafe_access( is_store, T_LONG, Relaxed, true); 652 653 case vmIntrinsics::_getReferenceAcquire: return inline_unsafe_access(!is_store, T_OBJECT, Acquire, false); 654 case vmIntrinsics::_getBooleanAcquire: return inline_unsafe_access(!is_store, T_BOOLEAN, Acquire, false); 655 case vmIntrinsics::_getByteAcquire: return inline_unsafe_access(!is_store, T_BYTE, Acquire, false); 656 case vmIntrinsics::_getShortAcquire: return inline_unsafe_access(!is_store, T_SHORT, Acquire, false); 657 case vmIntrinsics::_getCharAcquire: return inline_unsafe_access(!is_store, T_CHAR, Acquire, false); 658 case vmIntrinsics::_getIntAcquire: return inline_unsafe_access(!is_store, T_INT, Acquire, false); 659 case vmIntrinsics::_getLongAcquire: return inline_unsafe_access(!is_store, T_LONG, Acquire, false); 660 case vmIntrinsics::_getFloatAcquire: return inline_unsafe_access(!is_store, T_FLOAT, Acquire, false); 661 case vmIntrinsics::_getDoubleAcquire: return inline_unsafe_access(!is_store, T_DOUBLE, Acquire, false); 662 663 case vmIntrinsics::_putReferenceRelease: return inline_unsafe_access( is_store, T_OBJECT, Release, false); 664 case vmIntrinsics::_putBooleanRelease: return inline_unsafe_access( is_store, T_BOOLEAN, Release, false); 665 case vmIntrinsics::_putByteRelease: return inline_unsafe_access( is_store, T_BYTE, Release, false); 666 case vmIntrinsics::_putShortRelease: return inline_unsafe_access( is_store, T_SHORT, Release, false); 667 case vmIntrinsics::_putCharRelease: return inline_unsafe_access( is_store, T_CHAR, Release, false); 668 case vmIntrinsics::_putIntRelease: return inline_unsafe_access( is_store, T_INT, Release, false); 669 case vmIntrinsics::_putLongRelease: return inline_unsafe_access( is_store, T_LONG, Release, false); 670 case vmIntrinsics::_putFloatRelease: return inline_unsafe_access( is_store, T_FLOAT, Release, false); 671 case vmIntrinsics::_putDoubleRelease: return inline_unsafe_access( is_store, T_DOUBLE, Release, false); 672 673 case vmIntrinsics::_getReferenceOpaque: return inline_unsafe_access(!is_store, T_OBJECT, Opaque, false); 674 case vmIntrinsics::_getBooleanOpaque: return inline_unsafe_access(!is_store, T_BOOLEAN, Opaque, false); 675 case vmIntrinsics::_getByteOpaque: return inline_unsafe_access(!is_store, T_BYTE, Opaque, false); 676 case vmIntrinsics::_getShortOpaque: return inline_unsafe_access(!is_store, T_SHORT, Opaque, false); 677 case vmIntrinsics::_getCharOpaque: return inline_unsafe_access(!is_store, T_CHAR, Opaque, false); 678 case vmIntrinsics::_getIntOpaque: return inline_unsafe_access(!is_store, T_INT, Opaque, false); 679 case vmIntrinsics::_getLongOpaque: return inline_unsafe_access(!is_store, T_LONG, Opaque, false); 680 case vmIntrinsics::_getFloatOpaque: return inline_unsafe_access(!is_store, T_FLOAT, Opaque, false); 681 case vmIntrinsics::_getDoubleOpaque: return inline_unsafe_access(!is_store, T_DOUBLE, Opaque, false); 682 683 case vmIntrinsics::_putReferenceOpaque: return inline_unsafe_access( is_store, T_OBJECT, Opaque, false); 684 case vmIntrinsics::_putBooleanOpaque: return inline_unsafe_access( is_store, T_BOOLEAN, Opaque, false); 685 case vmIntrinsics::_putByteOpaque: return inline_unsafe_access( is_store, T_BYTE, Opaque, false); 686 case vmIntrinsics::_putShortOpaque: return inline_unsafe_access( is_store, T_SHORT, Opaque, false); 687 case vmIntrinsics::_putCharOpaque: return inline_unsafe_access( is_store, T_CHAR, Opaque, false); 688 case vmIntrinsics::_putIntOpaque: return inline_unsafe_access( is_store, T_INT, Opaque, false); 689 case vmIntrinsics::_putLongOpaque: return inline_unsafe_access( is_store, T_LONG, Opaque, false); 690 case vmIntrinsics::_putFloatOpaque: return inline_unsafe_access( is_store, T_FLOAT, Opaque, false); 691 case vmIntrinsics::_putDoubleOpaque: return inline_unsafe_access( is_store, T_DOUBLE, Opaque, false); 692 693 case vmIntrinsics::_compareAndSetReference: return inline_unsafe_load_store(T_OBJECT, LS_cmp_swap, Volatile); 694 case vmIntrinsics::_compareAndSetByte: return inline_unsafe_load_store(T_BYTE, LS_cmp_swap, Volatile); 695 case vmIntrinsics::_compareAndSetShort: return inline_unsafe_load_store(T_SHORT, LS_cmp_swap, Volatile); 696 case vmIntrinsics::_compareAndSetInt: return inline_unsafe_load_store(T_INT, LS_cmp_swap, Volatile); 697 case vmIntrinsics::_compareAndSetLong: return inline_unsafe_load_store(T_LONG, LS_cmp_swap, Volatile); 698 699 case vmIntrinsics::_weakCompareAndSetReferencePlain: return inline_unsafe_load_store(T_OBJECT, LS_cmp_swap_weak, Relaxed); 700 case vmIntrinsics::_weakCompareAndSetReferenceAcquire: return inline_unsafe_load_store(T_OBJECT, LS_cmp_swap_weak, Acquire); 701 case vmIntrinsics::_weakCompareAndSetReferenceRelease: return inline_unsafe_load_store(T_OBJECT, LS_cmp_swap_weak, Release); 702 case vmIntrinsics::_weakCompareAndSetReference: return inline_unsafe_load_store(T_OBJECT, LS_cmp_swap_weak, Volatile); 703 case vmIntrinsics::_weakCompareAndSetBytePlain: return inline_unsafe_load_store(T_BYTE, LS_cmp_swap_weak, Relaxed); 704 case vmIntrinsics::_weakCompareAndSetByteAcquire: return inline_unsafe_load_store(T_BYTE, LS_cmp_swap_weak, Acquire); 705 case vmIntrinsics::_weakCompareAndSetByteRelease: return inline_unsafe_load_store(T_BYTE, LS_cmp_swap_weak, Release); 706 case vmIntrinsics::_weakCompareAndSetByte: return inline_unsafe_load_store(T_BYTE, LS_cmp_swap_weak, Volatile); 707 case vmIntrinsics::_weakCompareAndSetShortPlain: return inline_unsafe_load_store(T_SHORT, LS_cmp_swap_weak, Relaxed); 708 case vmIntrinsics::_weakCompareAndSetShortAcquire: return inline_unsafe_load_store(T_SHORT, LS_cmp_swap_weak, Acquire); 709 case vmIntrinsics::_weakCompareAndSetShortRelease: return inline_unsafe_load_store(T_SHORT, LS_cmp_swap_weak, Release); 710 case vmIntrinsics::_weakCompareAndSetShort: return inline_unsafe_load_store(T_SHORT, LS_cmp_swap_weak, Volatile); 711 case vmIntrinsics::_weakCompareAndSetIntPlain: return inline_unsafe_load_store(T_INT, LS_cmp_swap_weak, Relaxed); 712 case vmIntrinsics::_weakCompareAndSetIntAcquire: return inline_unsafe_load_store(T_INT, LS_cmp_swap_weak, Acquire); 713 case vmIntrinsics::_weakCompareAndSetIntRelease: return inline_unsafe_load_store(T_INT, LS_cmp_swap_weak, Release); 714 case vmIntrinsics::_weakCompareAndSetInt: return inline_unsafe_load_store(T_INT, LS_cmp_swap_weak, Volatile); 715 case vmIntrinsics::_weakCompareAndSetLongPlain: return inline_unsafe_load_store(T_LONG, LS_cmp_swap_weak, Relaxed); 716 case vmIntrinsics::_weakCompareAndSetLongAcquire: return inline_unsafe_load_store(T_LONG, LS_cmp_swap_weak, Acquire); 717 case vmIntrinsics::_weakCompareAndSetLongRelease: return inline_unsafe_load_store(T_LONG, LS_cmp_swap_weak, Release); 718 case vmIntrinsics::_weakCompareAndSetLong: return inline_unsafe_load_store(T_LONG, LS_cmp_swap_weak, Volatile); 719 720 case vmIntrinsics::_compareAndExchangeReference: return inline_unsafe_load_store(T_OBJECT, LS_cmp_exchange, Volatile); 721 case vmIntrinsics::_compareAndExchangeReferenceAcquire: return inline_unsafe_load_store(T_OBJECT, LS_cmp_exchange, Acquire); 722 case vmIntrinsics::_compareAndExchangeReferenceRelease: return inline_unsafe_load_store(T_OBJECT, LS_cmp_exchange, Release); 723 case vmIntrinsics::_compareAndExchangeByte: return inline_unsafe_load_store(T_BYTE, LS_cmp_exchange, Volatile); 724 case vmIntrinsics::_compareAndExchangeByteAcquire: return inline_unsafe_load_store(T_BYTE, LS_cmp_exchange, Acquire); 725 case vmIntrinsics::_compareAndExchangeByteRelease: return inline_unsafe_load_store(T_BYTE, LS_cmp_exchange, Release); 726 case vmIntrinsics::_compareAndExchangeShort: return inline_unsafe_load_store(T_SHORT, LS_cmp_exchange, Volatile); 727 case vmIntrinsics::_compareAndExchangeShortAcquire: return inline_unsafe_load_store(T_SHORT, LS_cmp_exchange, Acquire); 728 case vmIntrinsics::_compareAndExchangeShortRelease: return inline_unsafe_load_store(T_SHORT, LS_cmp_exchange, Release); 729 case vmIntrinsics::_compareAndExchangeInt: return inline_unsafe_load_store(T_INT, LS_cmp_exchange, Volatile); 730 case vmIntrinsics::_compareAndExchangeIntAcquire: return inline_unsafe_load_store(T_INT, LS_cmp_exchange, Acquire); 731 case vmIntrinsics::_compareAndExchangeIntRelease: return inline_unsafe_load_store(T_INT, LS_cmp_exchange, Release); 732 case vmIntrinsics::_compareAndExchangeLong: return inline_unsafe_load_store(T_LONG, LS_cmp_exchange, Volatile); 733 case vmIntrinsics::_compareAndExchangeLongAcquire: return inline_unsafe_load_store(T_LONG, LS_cmp_exchange, Acquire); 734 case vmIntrinsics::_compareAndExchangeLongRelease: return inline_unsafe_load_store(T_LONG, LS_cmp_exchange, Release); 735 736 case vmIntrinsics::_getAndAddByte: return inline_unsafe_load_store(T_BYTE, LS_get_add, Volatile); 737 case vmIntrinsics::_getAndAddShort: return inline_unsafe_load_store(T_SHORT, LS_get_add, Volatile); 738 case vmIntrinsics::_getAndAddInt: return inline_unsafe_load_store(T_INT, LS_get_add, Volatile); 739 case vmIntrinsics::_getAndAddLong: return inline_unsafe_load_store(T_LONG, LS_get_add, Volatile); 740 741 case vmIntrinsics::_getAndSetByte: return inline_unsafe_load_store(T_BYTE, LS_get_set, Volatile); 742 case vmIntrinsics::_getAndSetShort: return inline_unsafe_load_store(T_SHORT, LS_get_set, Volatile); 743 case vmIntrinsics::_getAndSetInt: return inline_unsafe_load_store(T_INT, LS_get_set, Volatile); 744 case vmIntrinsics::_getAndSetLong: return inline_unsafe_load_store(T_LONG, LS_get_set, Volatile); 745 case vmIntrinsics::_getAndSetReference: return inline_unsafe_load_store(T_OBJECT, LS_get_set, Volatile); 746 747 case vmIntrinsics::_loadFence: 748 case vmIntrinsics::_storeFence: 749 case vmIntrinsics::_fullFence: return inline_unsafe_fence(intrinsic_id()); 750 751 case vmIntrinsics::_onSpinWait: return inline_onspinwait(); 752 753 case vmIntrinsics::_currentThread: return inline_native_currentThread(); 754 755 #ifdef JFR_HAVE_INTRINSICS 756 case vmIntrinsics::_counterTime: return inline_native_time_funcs(CAST_FROM_FN_PTR(address, JFR_TIME_FUNCTION), "counterTime"); 757 case vmIntrinsics::_getClassId: return inline_native_classID(); 758 case vmIntrinsics::_getEventWriter: return inline_native_getEventWriter(); 759 #endif 760 case vmIntrinsics::_currentTimeMillis: return inline_native_time_funcs(CAST_FROM_FN_PTR(address, os::javaTimeMillis), "currentTimeMillis"); 761 case vmIntrinsics::_nanoTime: return inline_native_time_funcs(CAST_FROM_FN_PTR(address, os::javaTimeNanos), "nanoTime"); 762 case vmIntrinsics::_writeback0: return inline_unsafe_writeback0(); 763 case vmIntrinsics::_writebackPreSync0: return inline_unsafe_writebackSync0(true); 764 case vmIntrinsics::_writebackPostSync0: return inline_unsafe_writebackSync0(false); 765 case vmIntrinsics::_allocateInstance: return inline_unsafe_allocate(); 766 case vmIntrinsics::_copyMemory: return inline_unsafe_copyMemory(); 767 case vmIntrinsics::_getLength: return inline_native_getLength(); 768 case vmIntrinsics::_copyOf: return inline_array_copyOf(false); 769 case vmIntrinsics::_copyOfRange: return inline_array_copyOf(true); 770 case vmIntrinsics::_equalsB: return inline_array_equals(StrIntrinsicNode::LL); 771 case vmIntrinsics::_equalsC: return inline_array_equals(StrIntrinsicNode::UU); 772 case vmIntrinsics::_Preconditions_checkIndex: return inline_preconditions_checkIndex(); 773 case vmIntrinsics::_clone: return inline_native_clone(intrinsic()->is_virtual()); 774 775 case vmIntrinsics::_allocateUninitializedArray: return inline_unsafe_newArray(true); 776 case vmIntrinsics::_newArray: return inline_unsafe_newArray(false); 777 778 case vmIntrinsics::_isAssignableFrom: return inline_native_subtype_check(); 779 780 case vmIntrinsics::_isInstance: 781 case vmIntrinsics::_getModifiers: 782 case vmIntrinsics::_isInterface: 783 case vmIntrinsics::_isArray: 784 case vmIntrinsics::_isPrimitive: 785 case vmIntrinsics::_getSuperclass: 786 case vmIntrinsics::_getClassAccessFlags: return inline_native_Class_query(intrinsic_id()); 787 788 case vmIntrinsics::_floatToRawIntBits: 789 case vmIntrinsics::_floatToIntBits: 790 case vmIntrinsics::_intBitsToFloat: 791 case vmIntrinsics::_doubleToRawLongBits: 792 case vmIntrinsics::_doubleToLongBits: 793 case vmIntrinsics::_longBitsToDouble: return inline_fp_conversions(intrinsic_id()); 794 795 case vmIntrinsics::_numberOfLeadingZeros_i: 796 case vmIntrinsics::_numberOfLeadingZeros_l: 797 case vmIntrinsics::_numberOfTrailingZeros_i: 798 case vmIntrinsics::_numberOfTrailingZeros_l: 799 case vmIntrinsics::_bitCount_i: 800 case vmIntrinsics::_bitCount_l: 801 case vmIntrinsics::_reverseBytes_i: 802 case vmIntrinsics::_reverseBytes_l: 803 case vmIntrinsics::_reverseBytes_s: 804 case vmIntrinsics::_reverseBytes_c: return inline_number_methods(intrinsic_id()); 805 806 case vmIntrinsics::_getCallerClass: return inline_native_Reflection_getCallerClass(); 807 808 case vmIntrinsics::_Reference_get: return inline_reference_get(); 809 810 case vmIntrinsics::_Class_cast: return inline_Class_cast(); 811 812 case vmIntrinsics::_aescrypt_encryptBlock: 813 case vmIntrinsics::_aescrypt_decryptBlock: return inline_aescrypt_Block(intrinsic_id()); 814 815 case vmIntrinsics::_cipherBlockChaining_encryptAESCrypt: 816 case vmIntrinsics::_cipherBlockChaining_decryptAESCrypt: 817 return inline_cipherBlockChaining_AESCrypt(intrinsic_id()); 818 819 case vmIntrinsics::_electronicCodeBook_encryptAESCrypt: 820 case vmIntrinsics::_electronicCodeBook_decryptAESCrypt: 821 return inline_electronicCodeBook_AESCrypt(intrinsic_id()); 822 823 case vmIntrinsics::_counterMode_AESCrypt: 824 return inline_counterMode_AESCrypt(intrinsic_id()); 825 826 case vmIntrinsics::_sha_implCompress: 827 case vmIntrinsics::_sha2_implCompress: 828 case vmIntrinsics::_sha5_implCompress: 829 return inline_sha_implCompress(intrinsic_id()); 830 831 case vmIntrinsics::_digestBase_implCompressMB: 832 return inline_digestBase_implCompressMB(predicate); 833 834 case vmIntrinsics::_multiplyToLen: 835 return inline_multiplyToLen(); 836 837 case vmIntrinsics::_squareToLen: 838 return inline_squareToLen(); 839 840 case vmIntrinsics::_mulAdd: 841 return inline_mulAdd(); 842 843 case vmIntrinsics::_montgomeryMultiply: 844 return inline_montgomeryMultiply(); 845 case vmIntrinsics::_montgomerySquare: 846 return inline_montgomerySquare(); 847 848 case vmIntrinsics::_vectorizedMismatch: 849 return inline_vectorizedMismatch(); 850 851 case vmIntrinsics::_ghash_processBlocks: 852 return inline_ghash_processBlocks(); 853 case vmIntrinsics::_base64_encodeBlock: 854 return inline_base64_encodeBlock(); 855 856 case vmIntrinsics::_encodeISOArray: 857 case vmIntrinsics::_encodeByteISOArray: 858 return inline_encodeISOArray(); 859 860 case vmIntrinsics::_updateCRC32: 861 return inline_updateCRC32(); 862 case vmIntrinsics::_updateBytesCRC32: 863 return inline_updateBytesCRC32(); 864 case vmIntrinsics::_updateByteBufferCRC32: 865 return inline_updateByteBufferCRC32(); 866 867 case vmIntrinsics::_updateBytesCRC32C: 868 return inline_updateBytesCRC32C(); 869 case vmIntrinsics::_updateDirectByteBufferCRC32C: 870 return inline_updateDirectByteBufferCRC32C(); 871 872 case vmIntrinsics::_updateBytesAdler32: 873 return inline_updateBytesAdler32(); 874 case vmIntrinsics::_updateByteBufferAdler32: 875 return inline_updateByteBufferAdler32(); 876 877 case vmIntrinsics::_profileBoolean: 878 return inline_profileBoolean(); 879 case vmIntrinsics::_isCompileConstant: 880 return inline_isCompileConstant(); 881 882 case vmIntrinsics::_hasNegatives: 883 return inline_hasNegatives(); 884 885 case vmIntrinsics::_fmaD: 886 case vmIntrinsics::_fmaF: 887 return inline_fma(intrinsic_id()); 888 889 case vmIntrinsics::_isDigit: 890 case vmIntrinsics::_isLowerCase: 891 case vmIntrinsics::_isUpperCase: 892 case vmIntrinsics::_isWhitespace: 893 return inline_character_compare(intrinsic_id()); 894 895 case vmIntrinsics::_maxF: 896 case vmIntrinsics::_minF: 897 case vmIntrinsics::_maxD: 898 case vmIntrinsics::_minD: 899 return inline_fp_min_max(intrinsic_id()); 900 901 default: 902 // If you get here, it may be that someone has added a new intrinsic 903 // to the list in vmSymbols.hpp without implementing it here. 904 #ifndef PRODUCT 905 if ((PrintMiscellaneous && (Verbose || WizardMode)) || PrintOpto) { 906 tty->print_cr("*** Warning: Unimplemented intrinsic %s(%d)", 907 vmIntrinsics::name_at(intrinsic_id()), intrinsic_id()); 908 } 909 #endif 910 return false; 911 } 912 } 913 914 Node* LibraryCallKit::try_to_predicate(int predicate) { 915 if (!jvms()->has_method()) { 916 // Root JVMState has a null method. 917 assert(map()->memory()->Opcode() == Op_Parm, ""); 918 // Insert the memory aliasing node 919 set_all_memory(reset_memory()); 920 } 921 assert(merged_memory(), ""); 922 923 switch (intrinsic_id()) { 924 case vmIntrinsics::_cipherBlockChaining_encryptAESCrypt: 925 return inline_cipherBlockChaining_AESCrypt_predicate(false); 926 case vmIntrinsics::_cipherBlockChaining_decryptAESCrypt: 927 return inline_cipherBlockChaining_AESCrypt_predicate(true); 928 case vmIntrinsics::_electronicCodeBook_encryptAESCrypt: 929 return inline_electronicCodeBook_AESCrypt_predicate(false); 930 case vmIntrinsics::_electronicCodeBook_decryptAESCrypt: 931 return inline_electronicCodeBook_AESCrypt_predicate(true); 932 case vmIntrinsics::_counterMode_AESCrypt: 933 return inline_counterMode_AESCrypt_predicate(); 934 case vmIntrinsics::_digestBase_implCompressMB: 935 return inline_digestBase_implCompressMB_predicate(predicate); 936 937 default: 938 // If you get here, it may be that someone has added a new intrinsic 939 // to the list in vmSymbols.hpp without implementing it here. 940 #ifndef PRODUCT 941 if ((PrintMiscellaneous && (Verbose || WizardMode)) || PrintOpto) { 942 tty->print_cr("*** Warning: Unimplemented predicate for intrinsic %s(%d)", 943 vmIntrinsics::name_at(intrinsic_id()), intrinsic_id()); 944 } 945 #endif 946 Node* slow_ctl = control(); 947 set_control(top()); // No fast path instrinsic 948 return slow_ctl; 949 } 950 } 951 952 //------------------------------set_result------------------------------- 953 // Helper function for finishing intrinsics. 954 void LibraryCallKit::set_result(RegionNode* region, PhiNode* value) { 955 record_for_igvn(region); 956 set_control(_gvn.transform(region)); 957 set_result( _gvn.transform(value)); 958 assert(value->type()->basic_type() == result()->bottom_type()->basic_type(), "sanity"); 959 } 960 961 //------------------------------generate_guard--------------------------- 962 // Helper function for generating guarded fast-slow graph structures. 963 // The given 'test', if true, guards a slow path. If the test fails 964 // then a fast path can be taken. (We generally hope it fails.) 965 // In all cases, GraphKit::control() is updated to the fast path. 966 // The returned value represents the control for the slow path. 967 // The return value is never 'top'; it is either a valid control 968 // or NULL if it is obvious that the slow path can never be taken. 969 // Also, if region and the slow control are not NULL, the slow edge 970 // is appended to the region. 971 Node* LibraryCallKit::generate_guard(Node* test, RegionNode* region, float true_prob) { 972 if (stopped()) { 973 // Already short circuited. 974 return NULL; 975 } 976 977 // Build an if node and its projections. 978 // If test is true we take the slow path, which we assume is uncommon. 979 if (_gvn.type(test) == TypeInt::ZERO) { 980 // The slow branch is never taken. No need to build this guard. 981 return NULL; 982 } 983 984 IfNode* iff = create_and_map_if(control(), test, true_prob, COUNT_UNKNOWN); 985 986 Node* if_slow = _gvn.transform(new IfTrueNode(iff)); 987 if (if_slow == top()) { 988 // The slow branch is never taken. No need to build this guard. 989 return NULL; 990 } 991 992 if (region != NULL) 993 region->add_req(if_slow); 994 995 Node* if_fast = _gvn.transform(new IfFalseNode(iff)); 996 set_control(if_fast); 997 998 return if_slow; 999 } 1000 1001 inline Node* LibraryCallKit::generate_slow_guard(Node* test, RegionNode* region) { 1002 return generate_guard(test, region, PROB_UNLIKELY_MAG(3)); 1003 } 1004 inline Node* LibraryCallKit::generate_fair_guard(Node* test, RegionNode* region) { 1005 return generate_guard(test, region, PROB_FAIR); 1006 } 1007 1008 inline Node* LibraryCallKit::generate_negative_guard(Node* index, RegionNode* region, 1009 Node* *pos_index) { 1010 if (stopped()) 1011 return NULL; // already stopped 1012 if (_gvn.type(index)->higher_equal(TypeInt::POS)) // [0,maxint] 1013 return NULL; // index is already adequately typed 1014 Node* cmp_lt = _gvn.transform(new CmpINode(index, intcon(0))); 1015 Node* bol_lt = _gvn.transform(new BoolNode(cmp_lt, BoolTest::lt)); 1016 Node* is_neg = generate_guard(bol_lt, region, PROB_MIN); 1017 if (is_neg != NULL && pos_index != NULL) { 1018 // Emulate effect of Parse::adjust_map_after_if. 1019 Node* ccast = new CastIINode(index, TypeInt::POS); 1020 ccast->set_req(0, control()); 1021 (*pos_index) = _gvn.transform(ccast); 1022 } 1023 return is_neg; 1024 } 1025 1026 // Make sure that 'position' is a valid limit index, in [0..length]. 1027 // There are two equivalent plans for checking this: 1028 // A. (offset + copyLength) unsigned<= arrayLength 1029 // B. offset <= (arrayLength - copyLength) 1030 // We require that all of the values above, except for the sum and 1031 // difference, are already known to be non-negative. 1032 // Plan A is robust in the face of overflow, if offset and copyLength 1033 // are both hugely positive. 1034 // 1035 // Plan B is less direct and intuitive, but it does not overflow at 1036 // all, since the difference of two non-negatives is always 1037 // representable. Whenever Java methods must perform the equivalent 1038 // check they generally use Plan B instead of Plan A. 1039 // For the moment we use Plan A. 1040 inline Node* LibraryCallKit::generate_limit_guard(Node* offset, 1041 Node* subseq_length, 1042 Node* array_length, 1043 RegionNode* region) { 1044 if (stopped()) 1045 return NULL; // already stopped 1046 bool zero_offset = _gvn.type(offset) == TypeInt::ZERO; 1047 if (zero_offset && subseq_length->eqv_uncast(array_length)) 1048 return NULL; // common case of whole-array copy 1049 Node* last = subseq_length; 1050 if (!zero_offset) // last += offset 1051 last = _gvn.transform(new AddINode(last, offset)); 1052 Node* cmp_lt = _gvn.transform(new CmpUNode(array_length, last)); 1053 Node* bol_lt = _gvn.transform(new BoolNode(cmp_lt, BoolTest::lt)); 1054 Node* is_over = generate_guard(bol_lt, region, PROB_MIN); 1055 return is_over; 1056 } 1057 1058 // Emit range checks for the given String.value byte array 1059 void LibraryCallKit::generate_string_range_check(Node* array, Node* offset, Node* count, bool char_count) { 1060 if (stopped()) { 1061 return; // already stopped 1062 } 1063 RegionNode* bailout = new RegionNode(1); 1064 record_for_igvn(bailout); 1065 if (char_count) { 1066 // Convert char count to byte count 1067 count = _gvn.transform(new LShiftINode(count, intcon(1))); 1068 } 1069 1070 // Offset and count must not be negative 1071 generate_negative_guard(offset, bailout); 1072 generate_negative_guard(count, bailout); 1073 // Offset + count must not exceed length of array 1074 generate_limit_guard(offset, count, load_array_length(array), bailout); 1075 1076 if (bailout->req() > 1) { 1077 PreserveJVMState pjvms(this); 1078 set_control(_gvn.transform(bailout)); 1079 uncommon_trap(Deoptimization::Reason_intrinsic, 1080 Deoptimization::Action_maybe_recompile); 1081 } 1082 } 1083 1084 //--------------------------generate_current_thread-------------------- 1085 Node* LibraryCallKit::generate_current_thread(Node* &tls_output) { 1086 ciKlass* thread_klass = env()->Thread_klass(); 1087 const Type* thread_type = TypeOopPtr::make_from_klass(thread_klass)->cast_to_ptr_type(TypePtr::NotNull); 1088 Node* thread = _gvn.transform(new ThreadLocalNode()); 1089 Node* p = basic_plus_adr(top()/*!oop*/, thread, in_bytes(JavaThread::threadObj_offset())); 1090 Node* threadObj = make_load(NULL, p, thread_type, T_OBJECT, MemNode::unordered); 1091 tls_output = thread; 1092 return threadObj; 1093 } 1094 1095 1096 //------------------------------make_string_method_node------------------------ 1097 // Helper method for String intrinsic functions. This version is called with 1098 // str1 and str2 pointing to byte[] nodes containing Latin1 or UTF16 encoded 1099 // characters (depending on 'is_byte'). cnt1 and cnt2 are pointing to Int nodes 1100 // containing the lengths of str1 and str2. 1101 Node* LibraryCallKit::make_string_method_node(int opcode, Node* str1_start, Node* cnt1, Node* str2_start, Node* cnt2, StrIntrinsicNode::ArgEnc ae) { 1102 Node* result = NULL; 1103 switch (opcode) { 1104 case Op_StrIndexOf: 1105 result = new StrIndexOfNode(control(), memory(TypeAryPtr::BYTES), 1106 str1_start, cnt1, str2_start, cnt2, ae); 1107 break; 1108 case Op_StrComp: 1109 result = new StrCompNode(control(), memory(TypeAryPtr::BYTES), 1110 str1_start, cnt1, str2_start, cnt2, ae); 1111 break; 1112 case Op_StrEquals: 1113 // We already know that cnt1 == cnt2 here (checked in 'inline_string_equals'). 1114 // Use the constant length if there is one because optimized match rule may exist. 1115 result = new StrEqualsNode(control(), memory(TypeAryPtr::BYTES), 1116 str1_start, str2_start, cnt2->is_Con() ? cnt2 : cnt1, ae); 1117 break; 1118 default: 1119 ShouldNotReachHere(); 1120 return NULL; 1121 } 1122 1123 // All these intrinsics have checks. 1124 C->set_has_split_ifs(true); // Has chance for split-if optimization 1125 clear_upper_avx(); 1126 1127 return _gvn.transform(result); 1128 } 1129 1130 //------------------------------inline_string_compareTo------------------------ 1131 bool LibraryCallKit::inline_string_compareTo(StrIntrinsicNode::ArgEnc ae) { 1132 Node* arg1 = argument(0); 1133 Node* arg2 = argument(1); 1134 1135 arg1 = must_be_not_null(arg1, true); 1136 arg2 = must_be_not_null(arg2, true); 1137 1138 arg1 = access_resolve(arg1, ACCESS_READ); 1139 arg2 = access_resolve(arg2, ACCESS_READ); 1140 1141 // Get start addr and length of first argument 1142 Node* arg1_start = array_element_address(arg1, intcon(0), T_BYTE); 1143 Node* arg1_cnt = load_array_length(arg1); 1144 1145 // Get start addr and length of second argument 1146 Node* arg2_start = array_element_address(arg2, intcon(0), T_BYTE); 1147 Node* arg2_cnt = load_array_length(arg2); 1148 1149 Node* result = make_string_method_node(Op_StrComp, arg1_start, arg1_cnt, arg2_start, arg2_cnt, ae); 1150 set_result(result); 1151 return true; 1152 } 1153 1154 //------------------------------inline_string_equals------------------------ 1155 bool LibraryCallKit::inline_string_equals(StrIntrinsicNode::ArgEnc ae) { 1156 Node* arg1 = argument(0); 1157 Node* arg2 = argument(1); 1158 1159 // paths (plus control) merge 1160 RegionNode* region = new RegionNode(3); 1161 Node* phi = new PhiNode(region, TypeInt::BOOL); 1162 1163 if (!stopped()) { 1164 1165 arg1 = must_be_not_null(arg1, true); 1166 arg2 = must_be_not_null(arg2, true); 1167 1168 arg1 = access_resolve(arg1, ACCESS_READ); 1169 arg2 = access_resolve(arg2, ACCESS_READ); 1170 1171 // Get start addr and length of first argument 1172 Node* arg1_start = array_element_address(arg1, intcon(0), T_BYTE); 1173 Node* arg1_cnt = load_array_length(arg1); 1174 1175 // Get start addr and length of second argument 1176 Node* arg2_start = array_element_address(arg2, intcon(0), T_BYTE); 1177 Node* arg2_cnt = load_array_length(arg2); 1178 1179 // Check for arg1_cnt != arg2_cnt 1180 Node* cmp = _gvn.transform(new CmpINode(arg1_cnt, arg2_cnt)); 1181 Node* bol = _gvn.transform(new BoolNode(cmp, BoolTest::ne)); 1182 Node* if_ne = generate_slow_guard(bol, NULL); 1183 if (if_ne != NULL) { 1184 phi->init_req(2, intcon(0)); 1185 region->init_req(2, if_ne); 1186 } 1187 1188 // Check for count == 0 is done by assembler code for StrEquals. 1189 1190 if (!stopped()) { 1191 Node* equals = make_string_method_node(Op_StrEquals, arg1_start, arg1_cnt, arg2_start, arg2_cnt, ae); 1192 phi->init_req(1, equals); 1193 region->init_req(1, control()); 1194 } 1195 } 1196 1197 // post merge 1198 set_control(_gvn.transform(region)); 1199 record_for_igvn(region); 1200 1201 set_result(_gvn.transform(phi)); 1202 return true; 1203 } 1204 1205 //------------------------------inline_array_equals---------------------------- 1206 bool LibraryCallKit::inline_array_equals(StrIntrinsicNode::ArgEnc ae) { 1207 assert(ae == StrIntrinsicNode::UU || ae == StrIntrinsicNode::LL, "unsupported array types"); 1208 Node* arg1 = argument(0); 1209 Node* arg2 = argument(1); 1210 1211 arg1 = access_resolve(arg1, ACCESS_READ); 1212 arg2 = access_resolve(arg2, ACCESS_READ); 1213 1214 const TypeAryPtr* mtype = (ae == StrIntrinsicNode::UU) ? TypeAryPtr::CHARS : TypeAryPtr::BYTES; 1215 set_result(_gvn.transform(new AryEqNode(control(), memory(mtype), arg1, arg2, ae))); 1216 clear_upper_avx(); 1217 1218 return true; 1219 } 1220 1221 //------------------------------inline_hasNegatives------------------------------ 1222 bool LibraryCallKit::inline_hasNegatives() { 1223 if (too_many_traps(Deoptimization::Reason_intrinsic)) { 1224 return false; 1225 } 1226 1227 assert(callee()->signature()->size() == 3, "hasNegatives has 3 parameters"); 1228 // no receiver since it is static method 1229 Node* ba = argument(0); 1230 Node* offset = argument(1); 1231 Node* len = argument(2); 1232 1233 ba = must_be_not_null(ba, true); 1234 1235 // Range checks 1236 generate_string_range_check(ba, offset, len, false); 1237 if (stopped()) { 1238 return true; 1239 } 1240 ba = access_resolve(ba, ACCESS_READ); 1241 Node* ba_start = array_element_address(ba, offset, T_BYTE); 1242 Node* result = new HasNegativesNode(control(), memory(TypeAryPtr::BYTES), ba_start, len); 1243 set_result(_gvn.transform(result)); 1244 return true; 1245 } 1246 1247 bool LibraryCallKit::inline_preconditions_checkIndex() { 1248 Node* index = argument(0); 1249 Node* length = argument(1); 1250 if (too_many_traps(Deoptimization::Reason_intrinsic) || too_many_traps(Deoptimization::Reason_range_check)) { 1251 return false; 1252 } 1253 1254 Node* len_pos_cmp = _gvn.transform(new CmpINode(length, intcon(0))); 1255 Node* len_pos_bol = _gvn.transform(new BoolNode(len_pos_cmp, BoolTest::ge)); 1256 1257 { 1258 BuildCutout unless(this, len_pos_bol, PROB_MAX); 1259 uncommon_trap(Deoptimization::Reason_intrinsic, 1260 Deoptimization::Action_make_not_entrant); 1261 } 1262 1263 if (stopped()) { 1264 return false; 1265 } 1266 1267 Node* rc_cmp = _gvn.transform(new CmpUNode(index, length)); 1268 BoolTest::mask btest = BoolTest::lt; 1269 Node* rc_bool = _gvn.transform(new BoolNode(rc_cmp, btest)); 1270 RangeCheckNode* rc = new RangeCheckNode(control(), rc_bool, PROB_MAX, COUNT_UNKNOWN); 1271 _gvn.set_type(rc, rc->Value(&_gvn)); 1272 if (!rc_bool->is_Con()) { 1273 record_for_igvn(rc); 1274 } 1275 set_control(_gvn.transform(new IfTrueNode(rc))); 1276 { 1277 PreserveJVMState pjvms(this); 1278 set_control(_gvn.transform(new IfFalseNode(rc))); 1279 uncommon_trap(Deoptimization::Reason_range_check, 1280 Deoptimization::Action_make_not_entrant); 1281 } 1282 1283 if (stopped()) { 1284 return false; 1285 } 1286 1287 Node* result = new CastIINode(index, TypeInt::make(0, _gvn.type(length)->is_int()->_hi, Type::WidenMax)); 1288 result->set_req(0, control()); 1289 result = _gvn.transform(result); 1290 set_result(result); 1291 replace_in_map(index, result); 1292 clear_upper_avx(); 1293 return true; 1294 } 1295 1296 //------------------------------inline_string_indexOf------------------------ 1297 bool LibraryCallKit::inline_string_indexOf(StrIntrinsicNode::ArgEnc ae) { 1298 if (!Matcher::match_rule_supported(Op_StrIndexOf)) { 1299 return false; 1300 } 1301 Node* src = argument(0); 1302 Node* tgt = argument(1); 1303 1304 // Make the merge point 1305 RegionNode* result_rgn = new RegionNode(4); 1306 Node* result_phi = new PhiNode(result_rgn, TypeInt::INT); 1307 1308 src = must_be_not_null(src, true); 1309 tgt = must_be_not_null(tgt, true); 1310 1311 src = access_resolve(src, ACCESS_READ); 1312 tgt = access_resolve(tgt, ACCESS_READ); 1313 1314 // Get start addr and length of source string 1315 Node* src_start = array_element_address(src, intcon(0), T_BYTE); 1316 Node* src_count = load_array_length(src); 1317 1318 // Get start addr and length of substring 1319 Node* tgt_start = array_element_address(tgt, intcon(0), T_BYTE); 1320 Node* tgt_count = load_array_length(tgt); 1321 1322 if (ae == StrIntrinsicNode::UU || ae == StrIntrinsicNode::UL) { 1323 // Divide src size by 2 if String is UTF16 encoded 1324 src_count = _gvn.transform(new RShiftINode(src_count, intcon(1))); 1325 } 1326 if (ae == StrIntrinsicNode::UU) { 1327 // Divide substring size by 2 if String is UTF16 encoded 1328 tgt_count = _gvn.transform(new RShiftINode(tgt_count, intcon(1))); 1329 } 1330 1331 Node* result = make_indexOf_node(src_start, src_count, tgt_start, tgt_count, result_rgn, result_phi, ae); 1332 if (result != NULL) { 1333 result_phi->init_req(3, result); 1334 result_rgn->init_req(3, control()); 1335 } 1336 set_control(_gvn.transform(result_rgn)); 1337 record_for_igvn(result_rgn); 1338 set_result(_gvn.transform(result_phi)); 1339 1340 return true; 1341 } 1342 1343 //-----------------------------inline_string_indexOf----------------------- 1344 bool LibraryCallKit::inline_string_indexOfI(StrIntrinsicNode::ArgEnc ae) { 1345 if (too_many_traps(Deoptimization::Reason_intrinsic)) { 1346 return false; 1347 } 1348 if (!Matcher::match_rule_supported(Op_StrIndexOf)) { 1349 return false; 1350 } 1351 assert(callee()->signature()->size() == 5, "String.indexOf() has 5 arguments"); 1352 Node* src = argument(0); // byte[] 1353 Node* src_count = argument(1); // char count 1354 Node* tgt = argument(2); // byte[] 1355 Node* tgt_count = argument(3); // char count 1356 Node* from_index = argument(4); // char index 1357 1358 src = must_be_not_null(src, true); 1359 tgt = must_be_not_null(tgt, true); 1360 1361 src = access_resolve(src, ACCESS_READ); 1362 tgt = access_resolve(tgt, ACCESS_READ); 1363 1364 // Multiply byte array index by 2 if String is UTF16 encoded 1365 Node* src_offset = (ae == StrIntrinsicNode::LL) ? from_index : _gvn.transform(new LShiftINode(from_index, intcon(1))); 1366 src_count = _gvn.transform(new SubINode(src_count, from_index)); 1367 Node* src_start = array_element_address(src, src_offset, T_BYTE); 1368 Node* tgt_start = array_element_address(tgt, intcon(0), T_BYTE); 1369 1370 // Range checks 1371 generate_string_range_check(src, src_offset, src_count, ae != StrIntrinsicNode::LL); 1372 generate_string_range_check(tgt, intcon(0), tgt_count, ae == StrIntrinsicNode::UU); 1373 if (stopped()) { 1374 return true; 1375 } 1376 1377 RegionNode* region = new RegionNode(5); 1378 Node* phi = new PhiNode(region, TypeInt::INT); 1379 1380 Node* result = make_indexOf_node(src_start, src_count, tgt_start, tgt_count, region, phi, ae); 1381 if (result != NULL) { 1382 // The result is index relative to from_index if substring was found, -1 otherwise. 1383 // Generate code which will fold into cmove. 1384 Node* cmp = _gvn.transform(new CmpINode(result, intcon(0))); 1385 Node* bol = _gvn.transform(new BoolNode(cmp, BoolTest::lt)); 1386 1387 Node* if_lt = generate_slow_guard(bol, NULL); 1388 if (if_lt != NULL) { 1389 // result == -1 1390 phi->init_req(3, result); 1391 region->init_req(3, if_lt); 1392 } 1393 if (!stopped()) { 1394 result = _gvn.transform(new AddINode(result, from_index)); 1395 phi->init_req(4, result); 1396 region->init_req(4, control()); 1397 } 1398 } 1399 1400 set_control(_gvn.transform(region)); 1401 record_for_igvn(region); 1402 set_result(_gvn.transform(phi)); 1403 clear_upper_avx(); 1404 1405 return true; 1406 } 1407 1408 // Create StrIndexOfNode with fast path checks 1409 Node* LibraryCallKit::make_indexOf_node(Node* src_start, Node* src_count, Node* tgt_start, Node* tgt_count, 1410 RegionNode* region, Node* phi, StrIntrinsicNode::ArgEnc ae) { 1411 // Check for substr count > string count 1412 Node* cmp = _gvn.transform(new CmpINode(tgt_count, src_count)); 1413 Node* bol = _gvn.transform(new BoolNode(cmp, BoolTest::gt)); 1414 Node* if_gt = generate_slow_guard(bol, NULL); 1415 if (if_gt != NULL) { 1416 phi->init_req(1, intcon(-1)); 1417 region->init_req(1, if_gt); 1418 } 1419 if (!stopped()) { 1420 // Check for substr count == 0 1421 cmp = _gvn.transform(new CmpINode(tgt_count, intcon(0))); 1422 bol = _gvn.transform(new BoolNode(cmp, BoolTest::eq)); 1423 Node* if_zero = generate_slow_guard(bol, NULL); 1424 if (if_zero != NULL) { 1425 phi->init_req(2, intcon(0)); 1426 region->init_req(2, if_zero); 1427 } 1428 } 1429 if (!stopped()) { 1430 return make_string_method_node(Op_StrIndexOf, src_start, src_count, tgt_start, tgt_count, ae); 1431 } 1432 return NULL; 1433 } 1434 1435 //-----------------------------inline_string_indexOfChar----------------------- 1436 bool LibraryCallKit::inline_string_indexOfChar() { 1437 if (too_many_traps(Deoptimization::Reason_intrinsic)) { 1438 return false; 1439 } 1440 if (!Matcher::match_rule_supported(Op_StrIndexOfChar)) { 1441 return false; 1442 } 1443 assert(callee()->signature()->size() == 4, "String.indexOfChar() has 4 arguments"); 1444 Node* src = argument(0); // byte[] 1445 Node* tgt = argument(1); // tgt is int ch 1446 Node* from_index = argument(2); 1447 Node* max = argument(3); 1448 1449 src = must_be_not_null(src, true); 1450 src = access_resolve(src, ACCESS_READ); 1451 1452 Node* src_offset = _gvn.transform(new LShiftINode(from_index, intcon(1))); 1453 Node* src_start = array_element_address(src, src_offset, T_BYTE); 1454 Node* src_count = _gvn.transform(new SubINode(max, from_index)); 1455 1456 // Range checks 1457 generate_string_range_check(src, src_offset, src_count, true); 1458 if (stopped()) { 1459 return true; 1460 } 1461 1462 RegionNode* region = new RegionNode(3); 1463 Node* phi = new PhiNode(region, TypeInt::INT); 1464 1465 Node* result = new StrIndexOfCharNode(control(), memory(TypeAryPtr::BYTES), src_start, src_count, tgt, StrIntrinsicNode::none); 1466 C->set_has_split_ifs(true); // Has chance for split-if optimization 1467 _gvn.transform(result); 1468 1469 Node* cmp = _gvn.transform(new CmpINode(result, intcon(0))); 1470 Node* bol = _gvn.transform(new BoolNode(cmp, BoolTest::lt)); 1471 1472 Node* if_lt = generate_slow_guard(bol, NULL); 1473 if (if_lt != NULL) { 1474 // result == -1 1475 phi->init_req(2, result); 1476 region->init_req(2, if_lt); 1477 } 1478 if (!stopped()) { 1479 result = _gvn.transform(new AddINode(result, from_index)); 1480 phi->init_req(1, result); 1481 region->init_req(1, control()); 1482 } 1483 set_control(_gvn.transform(region)); 1484 record_for_igvn(region); 1485 set_result(_gvn.transform(phi)); 1486 1487 return true; 1488 } 1489 //---------------------------inline_string_copy--------------------- 1490 // compressIt == true --> generate a compressed copy operation (compress char[]/byte[] to byte[]) 1491 // int StringUTF16.compress(char[] src, int srcOff, byte[] dst, int dstOff, int len) 1492 // int StringUTF16.compress(byte[] src, int srcOff, byte[] dst, int dstOff, int len) 1493 // compressIt == false --> generate an inflated copy operation (inflate byte[] to char[]/byte[]) 1494 // void StringLatin1.inflate(byte[] src, int srcOff, char[] dst, int dstOff, int len) 1495 // void StringLatin1.inflate(byte[] src, int srcOff, byte[] dst, int dstOff, int len) 1496 bool LibraryCallKit::inline_string_copy(bool compress) { 1497 if (too_many_traps(Deoptimization::Reason_intrinsic)) { 1498 return false; 1499 } 1500 int nargs = 5; // 2 oops, 3 ints 1501 assert(callee()->signature()->size() == nargs, "string copy has 5 arguments"); 1502 1503 Node* src = argument(0); 1504 Node* src_offset = argument(1); 1505 Node* dst = argument(2); 1506 Node* dst_offset = argument(3); 1507 Node* length = argument(4); 1508 1509 // Check for allocation before we add nodes that would confuse 1510 // tightly_coupled_allocation() 1511 AllocateArrayNode* alloc = tightly_coupled_allocation(dst, NULL); 1512 1513 // Figure out the size and type of the elements we will be copying. 1514 const Type* src_type = src->Value(&_gvn); 1515 const Type* dst_type = dst->Value(&_gvn); 1516 BasicType src_elem = src_type->isa_aryptr()->klass()->as_array_klass()->element_type()->basic_type(); 1517 BasicType dst_elem = dst_type->isa_aryptr()->klass()->as_array_klass()->element_type()->basic_type(); 1518 assert((compress && dst_elem == T_BYTE && (src_elem == T_BYTE || src_elem == T_CHAR)) || 1519 (!compress && src_elem == T_BYTE && (dst_elem == T_BYTE || dst_elem == T_CHAR)), 1520 "Unsupported array types for inline_string_copy"); 1521 1522 src = must_be_not_null(src, true); 1523 dst = must_be_not_null(dst, true); 1524 1525 // Convert char[] offsets to byte[] offsets 1526 bool convert_src = (compress && src_elem == T_BYTE); 1527 bool convert_dst = (!compress && dst_elem == T_BYTE); 1528 if (convert_src) { 1529 src_offset = _gvn.transform(new LShiftINode(src_offset, intcon(1))); 1530 } else if (convert_dst) { 1531 dst_offset = _gvn.transform(new LShiftINode(dst_offset, intcon(1))); 1532 } 1533 1534 // Range checks 1535 generate_string_range_check(src, src_offset, length, convert_src); 1536 generate_string_range_check(dst, dst_offset, length, convert_dst); 1537 if (stopped()) { 1538 return true; 1539 } 1540 1541 src = access_resolve(src, ACCESS_READ); 1542 dst = access_resolve(dst, ACCESS_WRITE); 1543 1544 Node* src_start = array_element_address(src, src_offset, src_elem); 1545 Node* dst_start = array_element_address(dst, dst_offset, dst_elem); 1546 // 'src_start' points to src array + scaled offset 1547 // 'dst_start' points to dst array + scaled offset 1548 Node* count = NULL; 1549 if (compress) { 1550 count = compress_string(src_start, TypeAryPtr::get_array_body_type(src_elem), dst_start, length); 1551 } else { 1552 inflate_string(src_start, dst_start, TypeAryPtr::get_array_body_type(dst_elem), length); 1553 } 1554 1555 if (alloc != NULL) { 1556 if (alloc->maybe_set_complete(&_gvn)) { 1557 // "You break it, you buy it." 1558 InitializeNode* init = alloc->initialization(); 1559 assert(init->is_complete(), "we just did this"); 1560 init->set_complete_with_arraycopy(); 1561 assert(dst->is_CheckCastPP(), "sanity"); 1562 assert(dst->in(0)->in(0) == init, "dest pinned"); 1563 } 1564 // Do not let stores that initialize this object be reordered with 1565 // a subsequent store that would make this object accessible by 1566 // other threads. 1567 // Record what AllocateNode this StoreStore protects so that 1568 // escape analysis can go from the MemBarStoreStoreNode to the 1569 // AllocateNode and eliminate the MemBarStoreStoreNode if possible 1570 // based on the escape status of the AllocateNode. 1571 insert_mem_bar(Op_MemBarStoreStore, alloc->proj_out_or_null(AllocateNode::RawAddress)); 1572 } 1573 if (compress) { 1574 set_result(_gvn.transform(count)); 1575 } 1576 clear_upper_avx(); 1577 1578 return true; 1579 } 1580 1581 #ifdef _LP64 1582 #define XTOP ,top() /*additional argument*/ 1583 #else //_LP64 1584 #define XTOP /*no additional argument*/ 1585 #endif //_LP64 1586 1587 //------------------------inline_string_toBytesU-------------------------- 1588 // public static byte[] StringUTF16.toBytes(char[] value, int off, int len) 1589 bool LibraryCallKit::inline_string_toBytesU() { 1590 if (too_many_traps(Deoptimization::Reason_intrinsic)) { 1591 return false; 1592 } 1593 // Get the arguments. 1594 Node* value = argument(0); 1595 Node* offset = argument(1); 1596 Node* length = argument(2); 1597 1598 Node* newcopy = NULL; 1599 1600 // Set the original stack and the reexecute bit for the interpreter to reexecute 1601 // the bytecode that invokes StringUTF16.toBytes() if deoptimization happens. 1602 { PreserveReexecuteState preexecs(this); 1603 jvms()->set_should_reexecute(true); 1604 1605 // Check if a null path was taken unconditionally. 1606 value = null_check(value); 1607 1608 RegionNode* bailout = new RegionNode(1); 1609 record_for_igvn(bailout); 1610 1611 // Range checks 1612 generate_negative_guard(offset, bailout); 1613 generate_negative_guard(length, bailout); 1614 generate_limit_guard(offset, length, load_array_length(value), bailout); 1615 // Make sure that resulting byte[] length does not overflow Integer.MAX_VALUE 1616 generate_limit_guard(length, intcon(0), intcon(max_jint/2), bailout); 1617 1618 if (bailout->req() > 1) { 1619 PreserveJVMState pjvms(this); 1620 set_control(_gvn.transform(bailout)); 1621 uncommon_trap(Deoptimization::Reason_intrinsic, 1622 Deoptimization::Action_maybe_recompile); 1623 } 1624 if (stopped()) { 1625 return true; 1626 } 1627 1628 Node* size = _gvn.transform(new LShiftINode(length, intcon(1))); 1629 Node* klass_node = makecon(TypeKlassPtr::make(ciTypeArrayKlass::make(T_BYTE))); 1630 newcopy = new_array(klass_node, size, 0); // no arguments to push 1631 AllocateArrayNode* alloc = tightly_coupled_allocation(newcopy, NULL); 1632 1633 // Calculate starting addresses. 1634 value = access_resolve(value, ACCESS_READ); 1635 Node* src_start = array_element_address(value, offset, T_CHAR); 1636 Node* dst_start = basic_plus_adr(newcopy, arrayOopDesc::base_offset_in_bytes(T_BYTE)); 1637 1638 // Check if src array address is aligned to HeapWordSize (dst is always aligned) 1639 const TypeInt* toffset = gvn().type(offset)->is_int(); 1640 bool aligned = toffset->is_con() && ((toffset->get_con() * type2aelembytes(T_CHAR)) % HeapWordSize == 0); 1641 1642 // Figure out which arraycopy runtime method to call (disjoint, uninitialized). 1643 const char* copyfunc_name = "arraycopy"; 1644 address copyfunc_addr = StubRoutines::select_arraycopy_function(T_CHAR, aligned, true, copyfunc_name, true); 1645 Node* call = make_runtime_call(RC_LEAF|RC_NO_FP, 1646 OptoRuntime::fast_arraycopy_Type(), 1647 copyfunc_addr, copyfunc_name, TypeRawPtr::BOTTOM, 1648 src_start, dst_start, ConvI2X(length) XTOP); 1649 // Do not let reads from the cloned object float above the arraycopy. 1650 if (alloc != NULL) { 1651 if (alloc->maybe_set_complete(&_gvn)) { 1652 // "You break it, you buy it." 1653 InitializeNode* init = alloc->initialization(); 1654 assert(init->is_complete(), "we just did this"); 1655 init->set_complete_with_arraycopy(); 1656 assert(newcopy->is_CheckCastPP(), "sanity"); 1657 assert(newcopy->in(0)->in(0) == init, "dest pinned"); 1658 } 1659 // Do not let stores that initialize this object be reordered with 1660 // a subsequent store that would make this object accessible by 1661 // other threads. 1662 // Record what AllocateNode this StoreStore protects so that 1663 // escape analysis can go from the MemBarStoreStoreNode to the 1664 // AllocateNode and eliminate the MemBarStoreStoreNode if possible 1665 // based on the escape status of the AllocateNode. 1666 insert_mem_bar(Op_MemBarStoreStore, alloc->proj_out_or_null(AllocateNode::RawAddress)); 1667 } else { 1668 insert_mem_bar(Op_MemBarCPUOrder); 1669 } 1670 } // original reexecute is set back here 1671 1672 C->set_has_split_ifs(true); // Has chance for split-if optimization 1673 if (!stopped()) { 1674 set_result(newcopy); 1675 } 1676 clear_upper_avx(); 1677 1678 return true; 1679 } 1680 1681 //------------------------inline_string_getCharsU-------------------------- 1682 // public void StringUTF16.getChars(byte[] src, int srcBegin, int srcEnd, char dst[], int dstBegin) 1683 bool LibraryCallKit::inline_string_getCharsU() { 1684 if (too_many_traps(Deoptimization::Reason_intrinsic)) { 1685 return false; 1686 } 1687 1688 // Get the arguments. 1689 Node* src = argument(0); 1690 Node* src_begin = argument(1); 1691 Node* src_end = argument(2); // exclusive offset (i < src_end) 1692 Node* dst = argument(3); 1693 Node* dst_begin = argument(4); 1694 1695 // Check for allocation before we add nodes that would confuse 1696 // tightly_coupled_allocation() 1697 AllocateArrayNode* alloc = tightly_coupled_allocation(dst, NULL); 1698 1699 // Check if a null path was taken unconditionally. 1700 src = null_check(src); 1701 dst = null_check(dst); 1702 if (stopped()) { 1703 return true; 1704 } 1705 1706 // Get length and convert char[] offset to byte[] offset 1707 Node* length = _gvn.transform(new SubINode(src_end, src_begin)); 1708 src_begin = _gvn.transform(new LShiftINode(src_begin, intcon(1))); 1709 1710 // Range checks 1711 generate_string_range_check(src, src_begin, length, true); 1712 generate_string_range_check(dst, dst_begin, length, false); 1713 if (stopped()) { 1714 return true; 1715 } 1716 1717 if (!stopped()) { 1718 src = access_resolve(src, ACCESS_READ); 1719 dst = access_resolve(dst, ACCESS_WRITE); 1720 1721 // Calculate starting addresses. 1722 Node* src_start = array_element_address(src, src_begin, T_BYTE); 1723 Node* dst_start = array_element_address(dst, dst_begin, T_CHAR); 1724 1725 // Check if array addresses are aligned to HeapWordSize 1726 const TypeInt* tsrc = gvn().type(src_begin)->is_int(); 1727 const TypeInt* tdst = gvn().type(dst_begin)->is_int(); 1728 bool aligned = tsrc->is_con() && ((tsrc->get_con() * type2aelembytes(T_BYTE)) % HeapWordSize == 0) && 1729 tdst->is_con() && ((tdst->get_con() * type2aelembytes(T_CHAR)) % HeapWordSize == 0); 1730 1731 // Figure out which arraycopy runtime method to call (disjoint, uninitialized). 1732 const char* copyfunc_name = "arraycopy"; 1733 address copyfunc_addr = StubRoutines::select_arraycopy_function(T_CHAR, aligned, true, copyfunc_name, true); 1734 Node* call = make_runtime_call(RC_LEAF|RC_NO_FP, 1735 OptoRuntime::fast_arraycopy_Type(), 1736 copyfunc_addr, copyfunc_name, TypeRawPtr::BOTTOM, 1737 src_start, dst_start, ConvI2X(length) XTOP); 1738 // Do not let reads from the cloned object float above the arraycopy. 1739 if (alloc != NULL) { 1740 if (alloc->maybe_set_complete(&_gvn)) { 1741 // "You break it, you buy it." 1742 InitializeNode* init = alloc->initialization(); 1743 assert(init->is_complete(), "we just did this"); 1744 init->set_complete_with_arraycopy(); 1745 assert(dst->is_CheckCastPP(), "sanity"); 1746 assert(dst->in(0)->in(0) == init, "dest pinned"); 1747 } 1748 // Do not let stores that initialize this object be reordered with 1749 // a subsequent store that would make this object accessible by 1750 // other threads. 1751 // Record what AllocateNode this StoreStore protects so that 1752 // escape analysis can go from the MemBarStoreStoreNode to the 1753 // AllocateNode and eliminate the MemBarStoreStoreNode if possible 1754 // based on the escape status of the AllocateNode. 1755 insert_mem_bar(Op_MemBarStoreStore, alloc->proj_out_or_null(AllocateNode::RawAddress)); 1756 } else { 1757 insert_mem_bar(Op_MemBarCPUOrder); 1758 } 1759 } 1760 1761 C->set_has_split_ifs(true); // Has chance for split-if optimization 1762 return true; 1763 } 1764 1765 //----------------------inline_string_char_access---------------------------- 1766 // Store/Load char to/from byte[] array. 1767 // static void StringUTF16.putChar(byte[] val, int index, int c) 1768 // static char StringUTF16.getChar(byte[] val, int index) 1769 bool LibraryCallKit::inline_string_char_access(bool is_store) { 1770 Node* value = argument(0); 1771 Node* index = argument(1); 1772 Node* ch = is_store ? argument(2) : NULL; 1773 1774 // This intrinsic accesses byte[] array as char[] array. Computing the offsets 1775 // correctly requires matched array shapes. 1776 assert (arrayOopDesc::base_offset_in_bytes(T_CHAR) == arrayOopDesc::base_offset_in_bytes(T_BYTE), 1777 "sanity: byte[] and char[] bases agree"); 1778 assert (type2aelembytes(T_CHAR) == type2aelembytes(T_BYTE)*2, 1779 "sanity: byte[] and char[] scales agree"); 1780 1781 // Bail when getChar over constants is requested: constant folding would 1782 // reject folding mismatched char access over byte[]. A normal inlining for getChar 1783 // Java method would constant fold nicely instead. 1784 if (!is_store && value->is_Con() && index->is_Con()) { 1785 return false; 1786 } 1787 1788 value = must_be_not_null(value, true); 1789 value = access_resolve(value, is_store ? ACCESS_WRITE : ACCESS_READ); 1790 1791 Node* adr = array_element_address(value, index, T_CHAR); 1792 if (adr->is_top()) { 1793 return false; 1794 } 1795 if (is_store) { 1796 access_store_at(value, adr, TypeAryPtr::BYTES, ch, TypeInt::CHAR, T_CHAR, IN_HEAP | MO_UNORDERED | C2_MISMATCHED); 1797 } else { 1798 ch = access_load_at(value, adr, TypeAryPtr::BYTES, TypeInt::CHAR, T_CHAR, IN_HEAP | MO_UNORDERED | C2_MISMATCHED | C2_CONTROL_DEPENDENT_LOAD); 1799 set_result(ch); 1800 } 1801 return true; 1802 } 1803 1804 //--------------------------round_double_node-------------------------------- 1805 // Round a double node if necessary. 1806 Node* LibraryCallKit::round_double_node(Node* n) { 1807 if (Matcher::strict_fp_requires_explicit_rounding && UseSSE <= 1) 1808 n = _gvn.transform(new RoundDoubleNode(0, n)); 1809 return n; 1810 } 1811 1812 //------------------------------inline_math----------------------------------- 1813 // public static double Math.abs(double) 1814 // public static double Math.sqrt(double) 1815 // public static double Math.log(double) 1816 // public static double Math.log10(double) 1817 bool LibraryCallKit::inline_double_math(vmIntrinsics::ID id) { 1818 Node* arg = round_double_node(argument(0)); 1819 Node* n = NULL; 1820 switch (id) { 1821 case vmIntrinsics::_dabs: n = new AbsDNode( arg); break; 1822 case vmIntrinsics::_dsqrt: n = new SqrtDNode(C, control(), arg); break; 1823 case vmIntrinsics::_ceil: n = RoundDoubleModeNode::make(_gvn, arg, RoundDoubleModeNode::rmode_ceil); break; 1824 case vmIntrinsics::_floor: n = RoundDoubleModeNode::make(_gvn, arg, RoundDoubleModeNode::rmode_floor); break; 1825 case vmIntrinsics::_rint: n = RoundDoubleModeNode::make(_gvn, arg, RoundDoubleModeNode::rmode_rint); break; 1826 default: fatal_unexpected_iid(id); break; 1827 } 1828 set_result(_gvn.transform(n)); 1829 return true; 1830 } 1831 1832 //------------------------------inline_math----------------------------------- 1833 // public static float Math.abs(float) 1834 // public static int Math.abs(int) 1835 // public static long Math.abs(long) 1836 bool LibraryCallKit::inline_math(vmIntrinsics::ID id) { 1837 Node* arg = argument(0); 1838 Node* n = NULL; 1839 switch (id) { 1840 case vmIntrinsics::_fabs: n = new AbsFNode( arg); break; 1841 case vmIntrinsics::_iabs: n = new AbsINode( arg); break; 1842 case vmIntrinsics::_labs: n = new AbsLNode( arg); break; 1843 default: fatal_unexpected_iid(id); break; 1844 } 1845 set_result(_gvn.transform(n)); 1846 return true; 1847 } 1848 1849 //------------------------------runtime_math----------------------------- 1850 bool LibraryCallKit::runtime_math(const TypeFunc* call_type, address funcAddr, const char* funcName) { 1851 assert(call_type == OptoRuntime::Math_DD_D_Type() || call_type == OptoRuntime::Math_D_D_Type(), 1852 "must be (DD)D or (D)D type"); 1853 1854 // Inputs 1855 Node* a = round_double_node(argument(0)); 1856 Node* b = (call_type == OptoRuntime::Math_DD_D_Type()) ? round_double_node(argument(2)) : NULL; 1857 1858 const TypePtr* no_memory_effects = NULL; 1859 Node* trig = make_runtime_call(RC_LEAF, call_type, funcAddr, funcName, 1860 no_memory_effects, 1861 a, top(), b, b ? top() : NULL); 1862 Node* value = _gvn.transform(new ProjNode(trig, TypeFunc::Parms+0)); 1863 #ifdef ASSERT 1864 Node* value_top = _gvn.transform(new ProjNode(trig, TypeFunc::Parms+1)); 1865 assert(value_top == top(), "second value must be top"); 1866 #endif 1867 1868 set_result(value); 1869 return true; 1870 } 1871 1872 //------------------------------inline_math_native----------------------------- 1873 bool LibraryCallKit::inline_math_native(vmIntrinsics::ID id) { 1874 #define FN_PTR(f) CAST_FROM_FN_PTR(address, f) 1875 switch (id) { 1876 // These intrinsics are not properly supported on all hardware 1877 case vmIntrinsics::_dsin: 1878 return StubRoutines::dsin() != NULL ? 1879 runtime_math(OptoRuntime::Math_D_D_Type(), StubRoutines::dsin(), "dsin") : 1880 runtime_math(OptoRuntime::Math_D_D_Type(), FN_PTR(SharedRuntime::dsin), "SIN"); 1881 case vmIntrinsics::_dcos: 1882 return StubRoutines::dcos() != NULL ? 1883 runtime_math(OptoRuntime::Math_D_D_Type(), StubRoutines::dcos(), "dcos") : 1884 runtime_math(OptoRuntime::Math_D_D_Type(), FN_PTR(SharedRuntime::dcos), "COS"); 1885 case vmIntrinsics::_dtan: 1886 return StubRoutines::dtan() != NULL ? 1887 runtime_math(OptoRuntime::Math_D_D_Type(), StubRoutines::dtan(), "dtan") : 1888 runtime_math(OptoRuntime::Math_D_D_Type(), FN_PTR(SharedRuntime::dtan), "TAN"); 1889 case vmIntrinsics::_dlog: 1890 return StubRoutines::dlog() != NULL ? 1891 runtime_math(OptoRuntime::Math_D_D_Type(), StubRoutines::dlog(), "dlog") : 1892 runtime_math(OptoRuntime::Math_D_D_Type(), FN_PTR(SharedRuntime::dlog), "LOG"); 1893 case vmIntrinsics::_dlog10: 1894 return StubRoutines::dlog10() != NULL ? 1895 runtime_math(OptoRuntime::Math_D_D_Type(), StubRoutines::dlog10(), "dlog10") : 1896 runtime_math(OptoRuntime::Math_D_D_Type(), FN_PTR(SharedRuntime::dlog10), "LOG10"); 1897 1898 // These intrinsics are supported on all hardware 1899 case vmIntrinsics::_ceil: 1900 case vmIntrinsics::_floor: 1901 case vmIntrinsics::_rint: return Matcher::match_rule_supported(Op_RoundDoubleMode) ? inline_double_math(id) : false; 1902 case vmIntrinsics::_dsqrt: return Matcher::match_rule_supported(Op_SqrtD) ? inline_double_math(id) : false; 1903 case vmIntrinsics::_dabs: return Matcher::has_match_rule(Op_AbsD) ? inline_double_math(id) : false; 1904 case vmIntrinsics::_fabs: return Matcher::match_rule_supported(Op_AbsF) ? inline_math(id) : false; 1905 case vmIntrinsics::_iabs: return Matcher::match_rule_supported(Op_AbsI) ? inline_math(id) : false; 1906 case vmIntrinsics::_labs: return Matcher::match_rule_supported(Op_AbsL) ? inline_math(id) : false; 1907 1908 case vmIntrinsics::_dexp: 1909 return StubRoutines::dexp() != NULL ? 1910 runtime_math(OptoRuntime::Math_D_D_Type(), StubRoutines::dexp(), "dexp") : 1911 runtime_math(OptoRuntime::Math_D_D_Type(), FN_PTR(SharedRuntime::dexp), "EXP"); 1912 case vmIntrinsics::_dpow: { 1913 Node* exp = round_double_node(argument(2)); 1914 const TypeD* d = _gvn.type(exp)->isa_double_constant(); 1915 if (d != NULL && d->getd() == 2.0) { 1916 // Special case: pow(x, 2.0) => x * x 1917 Node* base = round_double_node(argument(0)); 1918 set_result(_gvn.transform(new MulDNode(base, base))); 1919 return true; 1920 } 1921 return StubRoutines::dpow() != NULL ? 1922 runtime_math(OptoRuntime::Math_DD_D_Type(), StubRoutines::dpow(), "dpow") : 1923 runtime_math(OptoRuntime::Math_DD_D_Type(), FN_PTR(SharedRuntime::dpow), "POW"); 1924 } 1925 #undef FN_PTR 1926 1927 // These intrinsics are not yet correctly implemented 1928 case vmIntrinsics::_datan2: 1929 return false; 1930 1931 default: 1932 fatal_unexpected_iid(id); 1933 return false; 1934 } 1935 } 1936 1937 static bool is_simple_name(Node* n) { 1938 return (n->req() == 1 // constant 1939 || (n->is_Type() && n->as_Type()->type()->singleton()) 1940 || n->is_Proj() // parameter or return value 1941 || n->is_Phi() // local of some sort 1942 ); 1943 } 1944 1945 //----------------------------inline_notify-----------------------------------* 1946 bool LibraryCallKit::inline_notify(vmIntrinsics::ID id) { 1947 const TypeFunc* ftype = OptoRuntime::monitor_notify_Type(); 1948 address func; 1949 if (id == vmIntrinsics::_notify) { 1950 func = OptoRuntime::monitor_notify_Java(); 1951 } else { 1952 func = OptoRuntime::monitor_notifyAll_Java(); 1953 } 1954 Node* call = make_runtime_call(RC_NO_LEAF, ftype, func, NULL, TypeRawPtr::BOTTOM, argument(0)); 1955 make_slow_call_ex(call, env()->Throwable_klass(), false); 1956 return true; 1957 } 1958 1959 1960 //----------------------------inline_min_max----------------------------------- 1961 bool LibraryCallKit::inline_min_max(vmIntrinsics::ID id) { 1962 set_result(generate_min_max(id, argument(0), argument(1))); 1963 return true; 1964 } 1965 1966 void LibraryCallKit::inline_math_mathExact(Node* math, Node *test) { 1967 Node* bol = _gvn.transform( new BoolNode(test, BoolTest::overflow) ); 1968 IfNode* check = create_and_map_if(control(), bol, PROB_UNLIKELY_MAG(3), COUNT_UNKNOWN); 1969 Node* fast_path = _gvn.transform( new IfFalseNode(check)); 1970 Node* slow_path = _gvn.transform( new IfTrueNode(check) ); 1971 1972 { 1973 PreserveJVMState pjvms(this); 1974 PreserveReexecuteState preexecs(this); 1975 jvms()->set_should_reexecute(true); 1976 1977 set_control(slow_path); 1978 set_i_o(i_o()); 1979 1980 uncommon_trap(Deoptimization::Reason_intrinsic, 1981 Deoptimization::Action_none); 1982 } 1983 1984 set_control(fast_path); 1985 set_result(math); 1986 } 1987 1988 template <typename OverflowOp> 1989 bool LibraryCallKit::inline_math_overflow(Node* arg1, Node* arg2) { 1990 typedef typename OverflowOp::MathOp MathOp; 1991 1992 MathOp* mathOp = new MathOp(arg1, arg2); 1993 Node* operation = _gvn.transform( mathOp ); 1994 Node* ofcheck = _gvn.transform( new OverflowOp(arg1, arg2) ); 1995 inline_math_mathExact(operation, ofcheck); 1996 return true; 1997 } 1998 1999 bool LibraryCallKit::inline_math_addExactI(bool is_increment) { 2000 return inline_math_overflow<OverflowAddINode>(argument(0), is_increment ? intcon(1) : argument(1)); 2001 } 2002 2003 bool LibraryCallKit::inline_math_addExactL(bool is_increment) { 2004 return inline_math_overflow<OverflowAddLNode>(argument(0), is_increment ? longcon(1) : argument(2)); 2005 } 2006 2007 bool LibraryCallKit::inline_math_subtractExactI(bool is_decrement) { 2008 return inline_math_overflow<OverflowSubINode>(argument(0), is_decrement ? intcon(1) : argument(1)); 2009 } 2010 2011 bool LibraryCallKit::inline_math_subtractExactL(bool is_decrement) { 2012 return inline_math_overflow<OverflowSubLNode>(argument(0), is_decrement ? longcon(1) : argument(2)); 2013 } 2014 2015 bool LibraryCallKit::inline_math_negateExactI() { 2016 return inline_math_overflow<OverflowSubINode>(intcon(0), argument(0)); 2017 } 2018 2019 bool LibraryCallKit::inline_math_negateExactL() { 2020 return inline_math_overflow<OverflowSubLNode>(longcon(0), argument(0)); 2021 } 2022 2023 bool LibraryCallKit::inline_math_multiplyExactI() { 2024 return inline_math_overflow<OverflowMulINode>(argument(0), argument(1)); 2025 } 2026 2027 bool LibraryCallKit::inline_math_multiplyExactL() { 2028 return inline_math_overflow<OverflowMulLNode>(argument(0), argument(2)); 2029 } 2030 2031 bool LibraryCallKit::inline_math_multiplyHigh() { 2032 set_result(_gvn.transform(new MulHiLNode(argument(0), argument(2)))); 2033 return true; 2034 } 2035 2036 Node* 2037 LibraryCallKit::generate_min_max(vmIntrinsics::ID id, Node* x0, Node* y0) { 2038 // These are the candidate return value: 2039 Node* xvalue = x0; 2040 Node* yvalue = y0; 2041 2042 if (xvalue == yvalue) { 2043 return xvalue; 2044 } 2045 2046 bool want_max = (id == vmIntrinsics::_max); 2047 2048 const TypeInt* txvalue = _gvn.type(xvalue)->isa_int(); 2049 const TypeInt* tyvalue = _gvn.type(yvalue)->isa_int(); 2050 if (txvalue == NULL || tyvalue == NULL) return top(); 2051 // This is not really necessary, but it is consistent with a 2052 // hypothetical MaxINode::Value method: 2053 int widen = MAX2(txvalue->_widen, tyvalue->_widen); 2054 2055 // %%% This folding logic should (ideally) be in a different place. 2056 // Some should be inside IfNode, and there to be a more reliable 2057 // transformation of ?: style patterns into cmoves. We also want 2058 // more powerful optimizations around cmove and min/max. 2059 2060 // Try to find a dominating comparison of these guys. 2061 // It can simplify the index computation for Arrays.copyOf 2062 // and similar uses of System.arraycopy. 2063 // First, compute the normalized version of CmpI(x, y). 2064 int cmp_op = Op_CmpI; 2065 Node* xkey = xvalue; 2066 Node* ykey = yvalue; 2067 Node* ideal_cmpxy = _gvn.transform(new CmpINode(xkey, ykey)); 2068 if (ideal_cmpxy->is_Cmp()) { 2069 // E.g., if we have CmpI(length - offset, count), 2070 // it might idealize to CmpI(length, count + offset) 2071 cmp_op = ideal_cmpxy->Opcode(); 2072 xkey = ideal_cmpxy->in(1); 2073 ykey = ideal_cmpxy->in(2); 2074 } 2075 2076 // Start by locating any relevant comparisons. 2077 Node* start_from = (xkey->outcnt() < ykey->outcnt()) ? xkey : ykey; 2078 Node* cmpxy = NULL; 2079 Node* cmpyx = NULL; 2080 for (DUIterator_Fast kmax, k = start_from->fast_outs(kmax); k < kmax; k++) { 2081 Node* cmp = start_from->fast_out(k); 2082 if (cmp->outcnt() > 0 && // must have prior uses 2083 cmp->in(0) == NULL && // must be context-independent 2084 cmp->Opcode() == cmp_op) { // right kind of compare 2085 if (cmp->in(1) == xkey && cmp->in(2) == ykey) cmpxy = cmp; 2086 if (cmp->in(1) == ykey && cmp->in(2) == xkey) cmpyx = cmp; 2087 } 2088 } 2089 2090 const int NCMPS = 2; 2091 Node* cmps[NCMPS] = { cmpxy, cmpyx }; 2092 int cmpn; 2093 for (cmpn = 0; cmpn < NCMPS; cmpn++) { 2094 if (cmps[cmpn] != NULL) break; // find a result 2095 } 2096 if (cmpn < NCMPS) { 2097 // Look for a dominating test that tells us the min and max. 2098 int depth = 0; // Limit search depth for speed 2099 Node* dom = control(); 2100 for (; dom != NULL; dom = IfNode::up_one_dom(dom, true)) { 2101 if (++depth >= 100) break; 2102 Node* ifproj = dom; 2103 if (!ifproj->is_Proj()) continue; 2104 Node* iff = ifproj->in(0); 2105 if (!iff->is_If()) continue; 2106 Node* bol = iff->in(1); 2107 if (!bol->is_Bool()) continue; 2108 Node* cmp = bol->in(1); 2109 if (cmp == NULL) continue; 2110 for (cmpn = 0; cmpn < NCMPS; cmpn++) 2111 if (cmps[cmpn] == cmp) break; 2112 if (cmpn == NCMPS) continue; 2113 BoolTest::mask btest = bol->as_Bool()->_test._test; 2114 if (ifproj->is_IfFalse()) btest = BoolTest(btest).negate(); 2115 if (cmp->in(1) == ykey) btest = BoolTest(btest).commute(); 2116 // At this point, we know that 'x btest y' is true. 2117 switch (btest) { 2118 case BoolTest::eq: 2119 // They are proven equal, so we can collapse the min/max. 2120 // Either value is the answer. Choose the simpler. 2121 if (is_simple_name(yvalue) && !is_simple_name(xvalue)) 2122 return yvalue; 2123 return xvalue; 2124 case BoolTest::lt: // x < y 2125 case BoolTest::le: // x <= y 2126 return (want_max ? yvalue : xvalue); 2127 case BoolTest::gt: // x > y 2128 case BoolTest::ge: // x >= y 2129 return (want_max ? xvalue : yvalue); 2130 default: 2131 break; 2132 } 2133 } 2134 } 2135 2136 // We failed to find a dominating test. 2137 // Let's pick a test that might GVN with prior tests. 2138 Node* best_bol = NULL; 2139 BoolTest::mask best_btest = BoolTest::illegal; 2140 for (cmpn = 0; cmpn < NCMPS; cmpn++) { 2141 Node* cmp = cmps[cmpn]; 2142 if (cmp == NULL) continue; 2143 for (DUIterator_Fast jmax, j = cmp->fast_outs(jmax); j < jmax; j++) { 2144 Node* bol = cmp->fast_out(j); 2145 if (!bol->is_Bool()) continue; 2146 BoolTest::mask btest = bol->as_Bool()->_test._test; 2147 if (btest == BoolTest::eq || btest == BoolTest::ne) continue; 2148 if (cmp->in(1) == ykey) btest = BoolTest(btest).commute(); 2149 if (bol->outcnt() > (best_bol == NULL ? 0 : best_bol->outcnt())) { 2150 best_bol = bol->as_Bool(); 2151 best_btest = btest; 2152 } 2153 } 2154 } 2155 2156 Node* answer_if_true = NULL; 2157 Node* answer_if_false = NULL; 2158 switch (best_btest) { 2159 default: 2160 if (cmpxy == NULL) 2161 cmpxy = ideal_cmpxy; 2162 best_bol = _gvn.transform(new BoolNode(cmpxy, BoolTest::lt)); 2163 // and fall through: 2164 case BoolTest::lt: // x < y 2165 case BoolTest::le: // x <= y 2166 answer_if_true = (want_max ? yvalue : xvalue); 2167 answer_if_false = (want_max ? xvalue : yvalue); 2168 break; 2169 case BoolTest::gt: // x > y 2170 case BoolTest::ge: // x >= y 2171 answer_if_true = (want_max ? xvalue : yvalue); 2172 answer_if_false = (want_max ? yvalue : xvalue); 2173 break; 2174 } 2175 2176 jint hi, lo; 2177 if (want_max) { 2178 // We can sharpen the minimum. 2179 hi = MAX2(txvalue->_hi, tyvalue->_hi); 2180 lo = MAX2(txvalue->_lo, tyvalue->_lo); 2181 } else { 2182 // We can sharpen the maximum. 2183 hi = MIN2(txvalue->_hi, tyvalue->_hi); 2184 lo = MIN2(txvalue->_lo, tyvalue->_lo); 2185 } 2186 2187 // Use a flow-free graph structure, to avoid creating excess control edges 2188 // which could hinder other optimizations. 2189 // Since Math.min/max is often used with arraycopy, we want 2190 // tightly_coupled_allocation to be able to see beyond min/max expressions. 2191 Node* cmov = CMoveNode::make(NULL, best_bol, 2192 answer_if_false, answer_if_true, 2193 TypeInt::make(lo, hi, widen)); 2194 2195 return _gvn.transform(cmov); 2196 2197 /* 2198 // This is not as desirable as it may seem, since Min and Max 2199 // nodes do not have a full set of optimizations. 2200 // And they would interfere, anyway, with 'if' optimizations 2201 // and with CMoveI canonical forms. 2202 switch (id) { 2203 case vmIntrinsics::_min: 2204 result_val = _gvn.transform(new (C, 3) MinINode(x,y)); break; 2205 case vmIntrinsics::_max: 2206 result_val = _gvn.transform(new (C, 3) MaxINode(x,y)); break; 2207 default: 2208 ShouldNotReachHere(); 2209 } 2210 */ 2211 } 2212 2213 inline int 2214 LibraryCallKit::classify_unsafe_addr(Node* &base, Node* &offset, BasicType type) { 2215 const TypePtr* base_type = TypePtr::NULL_PTR; 2216 if (base != NULL) base_type = _gvn.type(base)->isa_ptr(); 2217 if (base_type == NULL) { 2218 // Unknown type. 2219 return Type::AnyPtr; 2220 } else if (base_type == TypePtr::NULL_PTR) { 2221 // Since this is a NULL+long form, we have to switch to a rawptr. 2222 base = _gvn.transform(new CastX2PNode(offset)); 2223 offset = MakeConX(0); 2224 return Type::RawPtr; 2225 } else if (base_type->base() == Type::RawPtr) { 2226 return Type::RawPtr; 2227 } else if (base_type->isa_oopptr()) { 2228 // Base is never null => always a heap address. 2229 if (!TypePtr::NULL_PTR->higher_equal(base_type)) { 2230 return Type::OopPtr; 2231 } 2232 // Offset is small => always a heap address. 2233 const TypeX* offset_type = _gvn.type(offset)->isa_intptr_t(); 2234 if (offset_type != NULL && 2235 base_type->offset() == 0 && // (should always be?) 2236 offset_type->_lo >= 0 && 2237 !MacroAssembler::needs_explicit_null_check(offset_type->_hi)) { 2238 return Type::OopPtr; 2239 } else if (type == T_OBJECT) { 2240 // off heap access to an oop doesn't make any sense. Has to be on 2241 // heap. 2242 return Type::OopPtr; 2243 } 2244 // Otherwise, it might either be oop+off or NULL+addr. 2245 return Type::AnyPtr; 2246 } else { 2247 // No information: 2248 return Type::AnyPtr; 2249 } 2250 } 2251 2252 inline Node* LibraryCallKit::make_unsafe_address(Node*& base, Node* offset, DecoratorSet decorators, BasicType type, bool can_cast) { 2253 Node* uncasted_base = base; 2254 int kind = classify_unsafe_addr(uncasted_base, offset, type); 2255 if (kind == Type::RawPtr) { 2256 return basic_plus_adr(top(), uncasted_base, offset); 2257 } else if (kind == Type::AnyPtr) { 2258 assert(base == uncasted_base, "unexpected base change"); 2259 if (can_cast) { 2260 if (!_gvn.type(base)->speculative_maybe_null() && 2261 !too_many_traps(Deoptimization::Reason_speculate_null_check)) { 2262 // According to profiling, this access is always on 2263 // heap. Casting the base to not null and thus avoiding membars 2264 // around the access should allow better optimizations 2265 Node* null_ctl = top(); 2266 base = null_check_oop(base, &null_ctl, true, true, true); 2267 assert(null_ctl->is_top(), "no null control here"); 2268 return basic_plus_adr(base, offset); 2269 } else if (_gvn.type(base)->speculative_always_null() && 2270 !too_many_traps(Deoptimization::Reason_speculate_null_assert)) { 2271 // According to profiling, this access is always off 2272 // heap. 2273 base = null_assert(base); 2274 Node* raw_base = _gvn.transform(new CastX2PNode(offset)); 2275 offset = MakeConX(0); 2276 return basic_plus_adr(top(), raw_base, offset); 2277 } 2278 } 2279 // We don't know if it's an on heap or off heap access. Fall back 2280 // to raw memory access. 2281 base = access_resolve(base, decorators); 2282 Node* raw = _gvn.transform(new CheckCastPPNode(control(), base, TypeRawPtr::BOTTOM)); 2283 return basic_plus_adr(top(), raw, offset); 2284 } else { 2285 assert(base == uncasted_base, "unexpected base change"); 2286 // We know it's an on heap access so base can't be null 2287 if (TypePtr::NULL_PTR->higher_equal(_gvn.type(base))) { 2288 base = must_be_not_null(base, true); 2289 } 2290 return basic_plus_adr(base, offset); 2291 } 2292 } 2293 2294 //--------------------------inline_number_methods----------------------------- 2295 // inline int Integer.numberOfLeadingZeros(int) 2296 // inline int Long.numberOfLeadingZeros(long) 2297 // 2298 // inline int Integer.numberOfTrailingZeros(int) 2299 // inline int Long.numberOfTrailingZeros(long) 2300 // 2301 // inline int Integer.bitCount(int) 2302 // inline int Long.bitCount(long) 2303 // 2304 // inline char Character.reverseBytes(char) 2305 // inline short Short.reverseBytes(short) 2306 // inline int Integer.reverseBytes(int) 2307 // inline long Long.reverseBytes(long) 2308 bool LibraryCallKit::inline_number_methods(vmIntrinsics::ID id) { 2309 Node* arg = argument(0); 2310 Node* n = NULL; 2311 switch (id) { 2312 case vmIntrinsics::_numberOfLeadingZeros_i: n = new CountLeadingZerosINode( arg); break; 2313 case vmIntrinsics::_numberOfLeadingZeros_l: n = new CountLeadingZerosLNode( arg); break; 2314 case vmIntrinsics::_numberOfTrailingZeros_i: n = new CountTrailingZerosINode(arg); break; 2315 case vmIntrinsics::_numberOfTrailingZeros_l: n = new CountTrailingZerosLNode(arg); break; 2316 case vmIntrinsics::_bitCount_i: n = new PopCountINode( arg); break; 2317 case vmIntrinsics::_bitCount_l: n = new PopCountLNode( arg); break; 2318 case vmIntrinsics::_reverseBytes_c: n = new ReverseBytesUSNode(0, arg); break; 2319 case vmIntrinsics::_reverseBytes_s: n = new ReverseBytesSNode( 0, arg); break; 2320 case vmIntrinsics::_reverseBytes_i: n = new ReverseBytesINode( 0, arg); break; 2321 case vmIntrinsics::_reverseBytes_l: n = new ReverseBytesLNode( 0, arg); break; 2322 default: fatal_unexpected_iid(id); break; 2323 } 2324 set_result(_gvn.transform(n)); 2325 return true; 2326 } 2327 2328 //----------------------------inline_unsafe_access---------------------------- 2329 2330 const TypeOopPtr* LibraryCallKit::sharpen_unsafe_type(Compile::AliasType* alias_type, const TypePtr *adr_type) { 2331 // Attempt to infer a sharper value type from the offset and base type. 2332 ciKlass* sharpened_klass = NULL; 2333 2334 // See if it is an instance field, with an object type. 2335 if (alias_type->field() != NULL) { 2336 if (alias_type->field()->type()->is_klass()) { 2337 sharpened_klass = alias_type->field()->type()->as_klass(); 2338 } 2339 } 2340 2341 // See if it is a narrow oop array. 2342 if (adr_type->isa_aryptr()) { 2343 if (adr_type->offset() >= objArrayOopDesc::base_offset_in_bytes()) { 2344 const TypeOopPtr *elem_type = adr_type->is_aryptr()->elem()->isa_oopptr(); 2345 if (elem_type != NULL) { 2346 sharpened_klass = elem_type->klass(); 2347 } 2348 } 2349 } 2350 2351 // The sharpened class might be unloaded if there is no class loader 2352 // contraint in place. 2353 if (sharpened_klass != NULL && sharpened_klass->is_loaded()) { 2354 const TypeOopPtr* tjp = TypeOopPtr::make_from_klass(sharpened_klass); 2355 2356 #ifndef PRODUCT 2357 if (C->print_intrinsics() || C->print_inlining()) { 2358 tty->print(" from base type: "); adr_type->dump(); tty->cr(); 2359 tty->print(" sharpened value: "); tjp->dump(); tty->cr(); 2360 } 2361 #endif 2362 // Sharpen the value type. 2363 return tjp; 2364 } 2365 return NULL; 2366 } 2367 2368 DecoratorSet LibraryCallKit::mo_decorator_for_access_kind(AccessKind kind) { 2369 switch (kind) { 2370 case Relaxed: 2371 return MO_UNORDERED; 2372 case Opaque: 2373 return MO_RELAXED; 2374 case Acquire: 2375 return MO_ACQUIRE; 2376 case Release: 2377 return MO_RELEASE; 2378 case Volatile: 2379 return MO_SEQ_CST; 2380 default: 2381 ShouldNotReachHere(); 2382 return 0; 2383 } 2384 } 2385 2386 bool LibraryCallKit::inline_unsafe_access(bool is_store, const BasicType type, const AccessKind kind, const bool unaligned) { 2387 if (callee()->is_static()) return false; // caller must have the capability! 2388 DecoratorSet decorators = C2_UNSAFE_ACCESS; 2389 guarantee(!is_store || kind != Acquire, "Acquire accesses can be produced only for loads"); 2390 guarantee( is_store || kind != Release, "Release accesses can be produced only for stores"); 2391 assert(type != T_OBJECT || !unaligned, "unaligned access not supported with object type"); 2392 2393 if (is_reference_type(type)) { 2394 decorators |= ON_UNKNOWN_OOP_REF; 2395 } 2396 2397 if (unaligned) { 2398 decorators |= C2_UNALIGNED; 2399 } 2400 2401 #ifndef PRODUCT 2402 { 2403 ResourceMark rm; 2404 // Check the signatures. 2405 ciSignature* sig = callee()->signature(); 2406 #ifdef ASSERT 2407 if (!is_store) { 2408 // Object getReference(Object base, int/long offset), etc. 2409 BasicType rtype = sig->return_type()->basic_type(); 2410 assert(rtype == type, "getter must return the expected value"); 2411 assert(sig->count() == 2, "oop getter has 2 arguments"); 2412 assert(sig->type_at(0)->basic_type() == T_OBJECT, "getter base is object"); 2413 assert(sig->type_at(1)->basic_type() == T_LONG, "getter offset is correct"); 2414 } else { 2415 // void putReference(Object base, int/long offset, Object x), etc. 2416 assert(sig->return_type()->basic_type() == T_VOID, "putter must not return a value"); 2417 assert(sig->count() == 3, "oop putter has 3 arguments"); 2418 assert(sig->type_at(0)->basic_type() == T_OBJECT, "putter base is object"); 2419 assert(sig->type_at(1)->basic_type() == T_LONG, "putter offset is correct"); 2420 BasicType vtype = sig->type_at(sig->count()-1)->basic_type(); 2421 assert(vtype == type, "putter must accept the expected value"); 2422 } 2423 #endif // ASSERT 2424 } 2425 #endif //PRODUCT 2426 2427 C->set_has_unsafe_access(true); // Mark eventual nmethod as "unsafe". 2428 2429 Node* receiver = argument(0); // type: oop 2430 2431 // Build address expression. 2432 Node* adr; 2433 Node* heap_base_oop = top(); 2434 Node* offset = top(); 2435 Node* val; 2436 2437 // The base is either a Java object or a value produced by Unsafe.staticFieldBase 2438 Node* base = argument(1); // type: oop 2439 // The offset is a value produced by Unsafe.staticFieldOffset or Unsafe.objectFieldOffset 2440 offset = argument(2); // type: long 2441 // We currently rely on the cookies produced by Unsafe.xxxFieldOffset 2442 // to be plain byte offsets, which are also the same as those accepted 2443 // by oopDesc::field_addr. 2444 assert(Unsafe_field_offset_to_byte_offset(11) == 11, 2445 "fieldOffset must be byte-scaled"); 2446 // 32-bit machines ignore the high half! 2447 offset = ConvL2X(offset); 2448 adr = make_unsafe_address(base, offset, is_store ? ACCESS_WRITE : ACCESS_READ, type, kind == Relaxed); 2449 2450 if (_gvn.type(base)->isa_ptr() != TypePtr::NULL_PTR) { 2451 heap_base_oop = base; 2452 } else if (type == T_OBJECT) { 2453 return false; // off-heap oop accesses are not supported 2454 } 2455 2456 // Can base be NULL? Otherwise, always on-heap access. 2457 bool can_access_non_heap = TypePtr::NULL_PTR->higher_equal(_gvn.type(base)); 2458 2459 if (!can_access_non_heap) { 2460 decorators |= IN_HEAP; 2461 } 2462 2463 val = is_store ? argument(4) : NULL; 2464 2465 const TypePtr* adr_type = _gvn.type(adr)->isa_ptr(); 2466 if (adr_type == TypePtr::NULL_PTR) { 2467 return false; // off-heap access with zero address 2468 } 2469 2470 // Try to categorize the address. 2471 Compile::AliasType* alias_type = C->alias_type(adr_type); 2472 assert(alias_type->index() != Compile::AliasIdxBot, "no bare pointers here"); 2473 2474 if (alias_type->adr_type() == TypeInstPtr::KLASS || 2475 alias_type->adr_type() == TypeAryPtr::RANGE) { 2476 return false; // not supported 2477 } 2478 2479 bool mismatched = false; 2480 BasicType bt = alias_type->basic_type(); 2481 if (bt != T_ILLEGAL) { 2482 assert(alias_type->adr_type()->is_oopptr(), "should be on-heap access"); 2483 if (bt == T_BYTE && adr_type->isa_aryptr()) { 2484 // Alias type doesn't differentiate between byte[] and boolean[]). 2485 // Use address type to get the element type. 2486 bt = adr_type->is_aryptr()->elem()->array_element_basic_type(); 2487 } 2488 if (bt == T_ARRAY || bt == T_NARROWOOP) { 2489 // accessing an array field with getReference is not a mismatch 2490 bt = T_OBJECT; 2491 } 2492 if ((bt == T_OBJECT) != (type == T_OBJECT)) { 2493 // Don't intrinsify mismatched object accesses 2494 return false; 2495 } 2496 mismatched = (bt != type); 2497 } else if (alias_type->adr_type()->isa_oopptr()) { 2498 mismatched = true; // conservatively mark all "wide" on-heap accesses as mismatched 2499 } 2500 2501 assert(!mismatched || alias_type->adr_type()->is_oopptr(), "off-heap access can't be mismatched"); 2502 2503 if (mismatched) { 2504 decorators |= C2_MISMATCHED; 2505 } 2506 2507 // First guess at the value type. 2508 const Type *value_type = Type::get_const_basic_type(type); 2509 2510 // Figure out the memory ordering. 2511 decorators |= mo_decorator_for_access_kind(kind); 2512 2513 if (!is_store && type == T_OBJECT) { 2514 const TypeOopPtr* tjp = sharpen_unsafe_type(alias_type, adr_type); 2515 if (tjp != NULL) { 2516 value_type = tjp; 2517 } 2518 } 2519 2520 receiver = null_check(receiver); 2521 if (stopped()) { 2522 return true; 2523 } 2524 // Heap pointers get a null-check from the interpreter, 2525 // as a courtesy. However, this is not guaranteed by Unsafe, 2526 // and it is not possible to fully distinguish unintended nulls 2527 // from intended ones in this API. 2528 2529 if (!is_store) { 2530 Node* p = NULL; 2531 // Try to constant fold a load from a constant field 2532 ciField* field = alias_type->field(); 2533 if (heap_base_oop != top() && field != NULL && field->is_constant() && !mismatched) { 2534 // final or stable field 2535 p = make_constant_from_field(field, heap_base_oop); 2536 } 2537 2538 if (p == NULL) { // Could not constant fold the load 2539 p = access_load_at(heap_base_oop, adr, adr_type, value_type, type, decorators); 2540 // Normalize the value returned by getBoolean in the following cases 2541 if (type == T_BOOLEAN && 2542 (mismatched || 2543 heap_base_oop == top() || // - heap_base_oop is NULL or 2544 (can_access_non_heap && field == NULL)) // - heap_base_oop is potentially NULL 2545 // and the unsafe access is made to large offset 2546 // (i.e., larger than the maximum offset necessary for any 2547 // field access) 2548 ) { 2549 IdealKit ideal = IdealKit(this); 2550 #define __ ideal. 2551 IdealVariable normalized_result(ideal); 2552 __ declarations_done(); 2553 __ set(normalized_result, p); 2554 __ if_then(p, BoolTest::ne, ideal.ConI(0)); 2555 __ set(normalized_result, ideal.ConI(1)); 2556 ideal.end_if(); 2557 final_sync(ideal); 2558 p = __ value(normalized_result); 2559 #undef __ 2560 } 2561 } 2562 if (type == T_ADDRESS) { 2563 p = gvn().transform(new CastP2XNode(NULL, p)); 2564 p = ConvX2UL(p); 2565 } 2566 // The load node has the control of the preceding MemBarCPUOrder. All 2567 // following nodes will have the control of the MemBarCPUOrder inserted at 2568 // the end of this method. So, pushing the load onto the stack at a later 2569 // point is fine. 2570 set_result(p); 2571 } else { 2572 if (bt == T_ADDRESS) { 2573 // Repackage the long as a pointer. 2574 val = ConvL2X(val); 2575 val = gvn().transform(new CastX2PNode(val)); 2576 } 2577 access_store_at(heap_base_oop, adr, adr_type, val, value_type, type, decorators); 2578 } 2579 2580 return true; 2581 } 2582 2583 //----------------------------inline_unsafe_load_store---------------------------- 2584 // This method serves a couple of different customers (depending on LoadStoreKind): 2585 // 2586 // LS_cmp_swap: 2587 // 2588 // boolean compareAndSetReference(Object o, long offset, Object expected, Object x); 2589 // boolean compareAndSetInt( Object o, long offset, int expected, int x); 2590 // boolean compareAndSetLong( Object o, long offset, long expected, long x); 2591 // 2592 // LS_cmp_swap_weak: 2593 // 2594 // boolean weakCompareAndSetReference( Object o, long offset, Object expected, Object x); 2595 // boolean weakCompareAndSetReferencePlain( Object o, long offset, Object expected, Object x); 2596 // boolean weakCompareAndSetReferenceAcquire(Object o, long offset, Object expected, Object x); 2597 // boolean weakCompareAndSetReferenceRelease(Object o, long offset, Object expected, Object x); 2598 // 2599 // boolean weakCompareAndSetInt( Object o, long offset, int expected, int x); 2600 // boolean weakCompareAndSetIntPlain( Object o, long offset, int expected, int x); 2601 // boolean weakCompareAndSetIntAcquire( Object o, long offset, int expected, int x); 2602 // boolean weakCompareAndSetIntRelease( Object o, long offset, int expected, int x); 2603 // 2604 // boolean weakCompareAndSetLong( Object o, long offset, long expected, long x); 2605 // boolean weakCompareAndSetLongPlain( Object o, long offset, long expected, long x); 2606 // boolean weakCompareAndSetLongAcquire( Object o, long offset, long expected, long x); 2607 // boolean weakCompareAndSetLongRelease( Object o, long offset, long expected, long x); 2608 // 2609 // LS_cmp_exchange: 2610 // 2611 // Object compareAndExchangeReferenceVolatile(Object o, long offset, Object expected, Object x); 2612 // Object compareAndExchangeReferenceAcquire( Object o, long offset, Object expected, Object x); 2613 // Object compareAndExchangeReferenceRelease( Object o, long offset, Object expected, Object x); 2614 // 2615 // Object compareAndExchangeIntVolatile( Object o, long offset, Object expected, Object x); 2616 // Object compareAndExchangeIntAcquire( Object o, long offset, Object expected, Object x); 2617 // Object compareAndExchangeIntRelease( Object o, long offset, Object expected, Object x); 2618 // 2619 // Object compareAndExchangeLongVolatile( Object o, long offset, Object expected, Object x); 2620 // Object compareAndExchangeLongAcquire( Object o, long offset, Object expected, Object x); 2621 // Object compareAndExchangeLongRelease( Object o, long offset, Object expected, Object x); 2622 // 2623 // LS_get_add: 2624 // 2625 // int getAndAddInt( Object o, long offset, int delta) 2626 // long getAndAddLong(Object o, long offset, long delta) 2627 // 2628 // LS_get_set: 2629 // 2630 // int getAndSet(Object o, long offset, int newValue) 2631 // long getAndSet(Object o, long offset, long newValue) 2632 // Object getAndSet(Object o, long offset, Object newValue) 2633 // 2634 bool LibraryCallKit::inline_unsafe_load_store(const BasicType type, const LoadStoreKind kind, const AccessKind access_kind) { 2635 // This basic scheme here is the same as inline_unsafe_access, but 2636 // differs in enough details that combining them would make the code 2637 // overly confusing. (This is a true fact! I originally combined 2638 // them, but even I was confused by it!) As much code/comments as 2639 // possible are retained from inline_unsafe_access though to make 2640 // the correspondences clearer. - dl 2641 2642 if (callee()->is_static()) return false; // caller must have the capability! 2643 2644 DecoratorSet decorators = C2_UNSAFE_ACCESS; 2645 decorators |= mo_decorator_for_access_kind(access_kind); 2646 2647 #ifndef PRODUCT 2648 BasicType rtype; 2649 { 2650 ResourceMark rm; 2651 // Check the signatures. 2652 ciSignature* sig = callee()->signature(); 2653 rtype = sig->return_type()->basic_type(); 2654 switch(kind) { 2655 case LS_get_add: 2656 case LS_get_set: { 2657 // Check the signatures. 2658 #ifdef ASSERT 2659 assert(rtype == type, "get and set must return the expected type"); 2660 assert(sig->count() == 3, "get and set has 3 arguments"); 2661 assert(sig->type_at(0)->basic_type() == T_OBJECT, "get and set base is object"); 2662 assert(sig->type_at(1)->basic_type() == T_LONG, "get and set offset is long"); 2663 assert(sig->type_at(2)->basic_type() == type, "get and set must take expected type as new value/delta"); 2664 assert(access_kind == Volatile, "mo is not passed to intrinsic nodes in current implementation"); 2665 #endif // ASSERT 2666 break; 2667 } 2668 case LS_cmp_swap: 2669 case LS_cmp_swap_weak: { 2670 // Check the signatures. 2671 #ifdef ASSERT 2672 assert(rtype == T_BOOLEAN, "CAS must return boolean"); 2673 assert(sig->count() == 4, "CAS has 4 arguments"); 2674 assert(sig->type_at(0)->basic_type() == T_OBJECT, "CAS base is object"); 2675 assert(sig->type_at(1)->basic_type() == T_LONG, "CAS offset is long"); 2676 #endif // ASSERT 2677 break; 2678 } 2679 case LS_cmp_exchange: { 2680 // Check the signatures. 2681 #ifdef ASSERT 2682 assert(rtype == type, "CAS must return the expected type"); 2683 assert(sig->count() == 4, "CAS has 4 arguments"); 2684 assert(sig->type_at(0)->basic_type() == T_OBJECT, "CAS base is object"); 2685 assert(sig->type_at(1)->basic_type() == T_LONG, "CAS offset is long"); 2686 #endif // ASSERT 2687 break; 2688 } 2689 default: 2690 ShouldNotReachHere(); 2691 } 2692 } 2693 #endif //PRODUCT 2694 2695 C->set_has_unsafe_access(true); // Mark eventual nmethod as "unsafe". 2696 2697 // Get arguments: 2698 Node* receiver = NULL; 2699 Node* base = NULL; 2700 Node* offset = NULL; 2701 Node* oldval = NULL; 2702 Node* newval = NULL; 2703 switch(kind) { 2704 case LS_cmp_swap: 2705 case LS_cmp_swap_weak: 2706 case LS_cmp_exchange: { 2707 const bool two_slot_type = type2size[type] == 2; 2708 receiver = argument(0); // type: oop 2709 base = argument(1); // type: oop 2710 offset = argument(2); // type: long 2711 oldval = argument(4); // type: oop, int, or long 2712 newval = argument(two_slot_type ? 6 : 5); // type: oop, int, or long 2713 break; 2714 } 2715 case LS_get_add: 2716 case LS_get_set: { 2717 receiver = argument(0); // type: oop 2718 base = argument(1); // type: oop 2719 offset = argument(2); // type: long 2720 oldval = NULL; 2721 newval = argument(4); // type: oop, int, or long 2722 break; 2723 } 2724 default: 2725 ShouldNotReachHere(); 2726 } 2727 2728 // Build field offset expression. 2729 // We currently rely on the cookies produced by Unsafe.xxxFieldOffset 2730 // to be plain byte offsets, which are also the same as those accepted 2731 // by oopDesc::field_addr. 2732 assert(Unsafe_field_offset_to_byte_offset(11) == 11, "fieldOffset must be byte-scaled"); 2733 // 32-bit machines ignore the high half of long offsets 2734 offset = ConvL2X(offset); 2735 Node* adr = make_unsafe_address(base, offset, ACCESS_WRITE | ACCESS_READ, type, false); 2736 const TypePtr *adr_type = _gvn.type(adr)->isa_ptr(); 2737 2738 Compile::AliasType* alias_type = C->alias_type(adr_type); 2739 BasicType bt = alias_type->basic_type(); 2740 if (bt != T_ILLEGAL && 2741 (is_reference_type(bt) != (type == T_OBJECT))) { 2742 // Don't intrinsify mismatched object accesses. 2743 return false; 2744 } 2745 2746 // For CAS, unlike inline_unsafe_access, there seems no point in 2747 // trying to refine types. Just use the coarse types here. 2748 assert(alias_type->index() != Compile::AliasIdxBot, "no bare pointers here"); 2749 const Type *value_type = Type::get_const_basic_type(type); 2750 2751 switch (kind) { 2752 case LS_get_set: 2753 case LS_cmp_exchange: { 2754 if (type == T_OBJECT) { 2755 const TypeOopPtr* tjp = sharpen_unsafe_type(alias_type, adr_type); 2756 if (tjp != NULL) { 2757 value_type = tjp; 2758 } 2759 } 2760 break; 2761 } 2762 case LS_cmp_swap: 2763 case LS_cmp_swap_weak: 2764 case LS_get_add: 2765 break; 2766 default: 2767 ShouldNotReachHere(); 2768 } 2769 2770 // Null check receiver. 2771 receiver = null_check(receiver); 2772 if (stopped()) { 2773 return true; 2774 } 2775 2776 int alias_idx = C->get_alias_index(adr_type); 2777 2778 if (is_reference_type(type)) { 2779 decorators |= IN_HEAP | ON_UNKNOWN_OOP_REF; 2780 2781 // Transformation of a value which could be NULL pointer (CastPP #NULL) 2782 // could be delayed during Parse (for example, in adjust_map_after_if()). 2783 // Execute transformation here to avoid barrier generation in such case. 2784 if (_gvn.type(newval) == TypePtr::NULL_PTR) 2785 newval = _gvn.makecon(TypePtr::NULL_PTR); 2786 2787 if (oldval != NULL && _gvn.type(oldval) == TypePtr::NULL_PTR) { 2788 // Refine the value to a null constant, when it is known to be null 2789 oldval = _gvn.makecon(TypePtr::NULL_PTR); 2790 } 2791 } 2792 2793 Node* result = NULL; 2794 switch (kind) { 2795 case LS_cmp_exchange: { 2796 result = access_atomic_cmpxchg_val_at(base, adr, adr_type, alias_idx, 2797 oldval, newval, value_type, type, decorators); 2798 break; 2799 } 2800 case LS_cmp_swap_weak: 2801 decorators |= C2_WEAK_CMPXCHG; 2802 case LS_cmp_swap: { 2803 result = access_atomic_cmpxchg_bool_at(base, adr, adr_type, alias_idx, 2804 oldval, newval, value_type, type, decorators); 2805 break; 2806 } 2807 case LS_get_set: { 2808 result = access_atomic_xchg_at(base, adr, adr_type, alias_idx, 2809 newval, value_type, type, decorators); 2810 break; 2811 } 2812 case LS_get_add: { 2813 result = access_atomic_add_at(base, adr, adr_type, alias_idx, 2814 newval, value_type, type, decorators); 2815 break; 2816 } 2817 default: 2818 ShouldNotReachHere(); 2819 } 2820 2821 assert(type2size[result->bottom_type()->basic_type()] == type2size[rtype], "result type should match"); 2822 set_result(result); 2823 return true; 2824 } 2825 2826 bool LibraryCallKit::inline_unsafe_fence(vmIntrinsics::ID id) { 2827 // Regardless of form, don't allow previous ld/st to move down, 2828 // then issue acquire, release, or volatile mem_bar. 2829 insert_mem_bar(Op_MemBarCPUOrder); 2830 switch(id) { 2831 case vmIntrinsics::_loadFence: 2832 insert_mem_bar(Op_LoadFence); 2833 return true; 2834 case vmIntrinsics::_storeFence: 2835 insert_mem_bar(Op_StoreFence); 2836 return true; 2837 case vmIntrinsics::_fullFence: 2838 insert_mem_bar(Op_MemBarVolatile); 2839 return true; 2840 default: 2841 fatal_unexpected_iid(id); 2842 return false; 2843 } 2844 } 2845 2846 bool LibraryCallKit::inline_onspinwait() { 2847 insert_mem_bar(Op_OnSpinWait); 2848 return true; 2849 } 2850 2851 bool LibraryCallKit::klass_needs_init_guard(Node* kls) { 2852 if (!kls->is_Con()) { 2853 return true; 2854 } 2855 const TypeKlassPtr* klsptr = kls->bottom_type()->isa_klassptr(); 2856 if (klsptr == NULL) { 2857 return true; 2858 } 2859 ciInstanceKlass* ik = klsptr->klass()->as_instance_klass(); 2860 // don't need a guard for a klass that is already initialized 2861 return !ik->is_initialized(); 2862 } 2863 2864 //----------------------------inline_unsafe_writeback0------------------------- 2865 // public native void Unsafe.writeback0(long address) 2866 bool LibraryCallKit::inline_unsafe_writeback0() { 2867 if (!Matcher::has_match_rule(Op_CacheWB)) { 2868 return false; 2869 } 2870 #ifndef PRODUCT 2871 assert(Matcher::has_match_rule(Op_CacheWBPreSync), "found match rule for CacheWB but not CacheWBPreSync"); 2872 assert(Matcher::has_match_rule(Op_CacheWBPostSync), "found match rule for CacheWB but not CacheWBPostSync"); 2873 ciSignature* sig = callee()->signature(); 2874 assert(sig->type_at(0)->basic_type() == T_LONG, "Unsafe_writeback0 address is long!"); 2875 #endif 2876 null_check_receiver(); // null-check, then ignore 2877 Node *addr = argument(1); 2878 addr = new CastX2PNode(addr); 2879 addr = _gvn.transform(addr); 2880 Node *flush = new CacheWBNode(control(), memory(TypeRawPtr::BOTTOM), addr); 2881 flush = _gvn.transform(flush); 2882 set_memory(flush, TypeRawPtr::BOTTOM); 2883 return true; 2884 } 2885 2886 //----------------------------inline_unsafe_writeback0------------------------- 2887 // public native void Unsafe.writeback0(long address) 2888 bool LibraryCallKit::inline_unsafe_writebackSync0(bool is_pre) { 2889 if (is_pre && !Matcher::has_match_rule(Op_CacheWBPreSync)) { 2890 return false; 2891 } 2892 if (!is_pre && !Matcher::has_match_rule(Op_CacheWBPostSync)) { 2893 return false; 2894 } 2895 #ifndef PRODUCT 2896 assert(Matcher::has_match_rule(Op_CacheWB), 2897 (is_pre ? "found match rule for CacheWBPreSync but not CacheWB" 2898 : "found match rule for CacheWBPostSync but not CacheWB")); 2899 2900 #endif 2901 null_check_receiver(); // null-check, then ignore 2902 Node *sync; 2903 if (is_pre) { 2904 sync = new CacheWBPreSyncNode(control(), memory(TypeRawPtr::BOTTOM)); 2905 } else { 2906 sync = new CacheWBPostSyncNode(control(), memory(TypeRawPtr::BOTTOM)); 2907 } 2908 sync = _gvn.transform(sync); 2909 set_memory(sync, TypeRawPtr::BOTTOM); 2910 return true; 2911 } 2912 2913 //----------------------------inline_unsafe_allocate--------------------------- 2914 // public native Object Unsafe.allocateInstance(Class<?> cls); 2915 bool LibraryCallKit::inline_unsafe_allocate() { 2916 if (callee()->is_static()) return false; // caller must have the capability! 2917 2918 null_check_receiver(); // null-check, then ignore 2919 Node* cls = null_check(argument(1)); 2920 if (stopped()) return true; 2921 2922 Node* kls = load_klass_from_mirror(cls, false, NULL, 0); 2923 kls = null_check(kls); 2924 if (stopped()) return true; // argument was like int.class 2925 2926 Node* test = NULL; 2927 if (LibraryCallKit::klass_needs_init_guard(kls)) { 2928 // Note: The argument might still be an illegal value like 2929 // Serializable.class or Object[].class. The runtime will handle it. 2930 // But we must make an explicit check for initialization. 2931 Node* insp = basic_plus_adr(kls, in_bytes(InstanceKlass::init_state_offset())); 2932 // Use T_BOOLEAN for InstanceKlass::_init_state so the compiler 2933 // can generate code to load it as unsigned byte. 2934 Node* inst = make_load(NULL, insp, TypeInt::UBYTE, T_BOOLEAN, MemNode::unordered); 2935 Node* bits = intcon(InstanceKlass::fully_initialized); 2936 test = _gvn.transform(new SubINode(inst, bits)); 2937 // The 'test' is non-zero if we need to take a slow path. 2938 } 2939 2940 Node* obj = new_instance(kls, test); 2941 set_result(obj); 2942 return true; 2943 } 2944 2945 //------------------------inline_native_time_funcs-------------- 2946 // inline code for System.currentTimeMillis() and System.nanoTime() 2947 // these have the same type and signature 2948 bool LibraryCallKit::inline_native_time_funcs(address funcAddr, const char* funcName) { 2949 const TypeFunc* tf = OptoRuntime::void_long_Type(); 2950 const TypePtr* no_memory_effects = NULL; 2951 Node* time = make_runtime_call(RC_LEAF, tf, funcAddr, funcName, no_memory_effects); 2952 Node* value = _gvn.transform(new ProjNode(time, TypeFunc::Parms+0)); 2953 #ifdef ASSERT 2954 Node* value_top = _gvn.transform(new ProjNode(time, TypeFunc::Parms+1)); 2955 assert(value_top == top(), "second value must be top"); 2956 #endif 2957 set_result(value); 2958 return true; 2959 } 2960 2961 #ifdef JFR_HAVE_INTRINSICS 2962 2963 /* 2964 * oop -> myklass 2965 * myklass->trace_id |= USED 2966 * return myklass->trace_id & ~0x3 2967 */ 2968 bool LibraryCallKit::inline_native_classID() { 2969 Node* cls = null_check(argument(0), T_OBJECT); 2970 Node* kls = load_klass_from_mirror(cls, false, NULL, 0); 2971 kls = null_check(kls, T_OBJECT); 2972 2973 ByteSize offset = KLASS_TRACE_ID_OFFSET; 2974 Node* insp = basic_plus_adr(kls, in_bytes(offset)); 2975 Node* tvalue = make_load(NULL, insp, TypeLong::LONG, T_LONG, MemNode::unordered); 2976 2977 Node* clsused = longcon(0x01l); // set the class bit 2978 Node* orl = _gvn.transform(new OrLNode(tvalue, clsused)); 2979 const TypePtr *adr_type = _gvn.type(insp)->isa_ptr(); 2980 store_to_memory(control(), insp, orl, T_LONG, adr_type, MemNode::unordered); 2981 2982 #ifdef TRACE_ID_META_BITS 2983 Node* mbits = longcon(~TRACE_ID_META_BITS); 2984 tvalue = _gvn.transform(new AndLNode(tvalue, mbits)); 2985 #endif 2986 #ifdef TRACE_ID_SHIFT 2987 Node* cbits = intcon(TRACE_ID_SHIFT); 2988 tvalue = _gvn.transform(new URShiftLNode(tvalue, cbits)); 2989 #endif 2990 2991 set_result(tvalue); 2992 return true; 2993 2994 } 2995 2996 bool LibraryCallKit::inline_native_getEventWriter() { 2997 Node* tls_ptr = _gvn.transform(new ThreadLocalNode()); 2998 2999 Node* jobj_ptr = basic_plus_adr(top(), tls_ptr, 3000 in_bytes(THREAD_LOCAL_WRITER_OFFSET_JFR)); 3001 3002 Node* jobj = make_load(control(), jobj_ptr, TypeRawPtr::BOTTOM, T_ADDRESS, MemNode::unordered); 3003 3004 Node* jobj_cmp_null = _gvn.transform( new CmpPNode(jobj, null()) ); 3005 Node* test_jobj_eq_null = _gvn.transform( new BoolNode(jobj_cmp_null, BoolTest::eq) ); 3006 3007 IfNode* iff_jobj_null = 3008 create_and_map_if(control(), test_jobj_eq_null, PROB_MIN, COUNT_UNKNOWN); 3009 3010 enum { _normal_path = 1, 3011 _null_path = 2, 3012 PATH_LIMIT }; 3013 3014 RegionNode* result_rgn = new RegionNode(PATH_LIMIT); 3015 PhiNode* result_val = new PhiNode(result_rgn, TypeInstPtr::BOTTOM); 3016 3017 Node* jobj_is_null = _gvn.transform(new IfTrueNode(iff_jobj_null)); 3018 result_rgn->init_req(_null_path, jobj_is_null); 3019 result_val->init_req(_null_path, null()); 3020 3021 Node* jobj_is_not_null = _gvn.transform(new IfFalseNode(iff_jobj_null)); 3022 set_control(jobj_is_not_null); 3023 Node* res = access_load(jobj, TypeInstPtr::NOTNULL, T_OBJECT, 3024 IN_NATIVE | C2_CONTROL_DEPENDENT_LOAD); 3025 result_rgn->init_req(_normal_path, control()); 3026 result_val->init_req(_normal_path, res); 3027 3028 set_result(result_rgn, result_val); 3029 3030 return true; 3031 } 3032 3033 #endif // JFR_HAVE_INTRINSICS 3034 3035 //------------------------inline_native_currentThread------------------ 3036 bool LibraryCallKit::inline_native_currentThread() { 3037 Node* junk = NULL; 3038 set_result(generate_current_thread(junk)); 3039 return true; 3040 } 3041 3042 //---------------------------load_mirror_from_klass---------------------------- 3043 // Given a klass oop, load its java mirror (a java.lang.Class oop). 3044 Node* LibraryCallKit::load_mirror_from_klass(Node* klass) { 3045 Node* p = basic_plus_adr(klass, in_bytes(Klass::java_mirror_offset())); 3046 Node* load = make_load(NULL, p, TypeRawPtr::NOTNULL, T_ADDRESS, MemNode::unordered); 3047 // mirror = ((OopHandle)mirror)->resolve(); 3048 return access_load(load, TypeInstPtr::MIRROR, T_OBJECT, IN_NATIVE); 3049 } 3050 3051 //-----------------------load_klass_from_mirror_common------------------------- 3052 // Given a java mirror (a java.lang.Class oop), load its corresponding klass oop. 3053 // Test the klass oop for null (signifying a primitive Class like Integer.TYPE), 3054 // and branch to the given path on the region. 3055 // If never_see_null, take an uncommon trap on null, so we can optimistically 3056 // compile for the non-null case. 3057 // If the region is NULL, force never_see_null = true. 3058 Node* LibraryCallKit::load_klass_from_mirror_common(Node* mirror, 3059 bool never_see_null, 3060 RegionNode* region, 3061 int null_path, 3062 int offset) { 3063 if (region == NULL) never_see_null = true; 3064 Node* p = basic_plus_adr(mirror, offset); 3065 const TypeKlassPtr* kls_type = TypeKlassPtr::OBJECT_OR_NULL; 3066 Node* kls = _gvn.transform(LoadKlassNode::make(_gvn, NULL, immutable_memory(), p, TypeRawPtr::BOTTOM, kls_type)); 3067 Node* null_ctl = top(); 3068 kls = null_check_oop(kls, &null_ctl, never_see_null); 3069 if (region != NULL) { 3070 // Set region->in(null_path) if the mirror is a primitive (e.g, int.class). 3071 region->init_req(null_path, null_ctl); 3072 } else { 3073 assert(null_ctl == top(), "no loose ends"); 3074 } 3075 return kls; 3076 } 3077 3078 //--------------------(inline_native_Class_query helpers)--------------------- 3079 // Use this for JVM_ACC_INTERFACE, JVM_ACC_IS_CLONEABLE_FAST, JVM_ACC_HAS_FINALIZER. 3080 // Fall through if (mods & mask) == bits, take the guard otherwise. 3081 Node* LibraryCallKit::generate_access_flags_guard(Node* kls, int modifier_mask, int modifier_bits, RegionNode* region) { 3082 // Branch around if the given klass has the given modifier bit set. 3083 // Like generate_guard, adds a new path onto the region. 3084 Node* modp = basic_plus_adr(kls, in_bytes(Klass::access_flags_offset())); 3085 Node* mods = make_load(NULL, modp, TypeInt::INT, T_INT, MemNode::unordered); 3086 Node* mask = intcon(modifier_mask); 3087 Node* bits = intcon(modifier_bits); 3088 Node* mbit = _gvn.transform(new AndINode(mods, mask)); 3089 Node* cmp = _gvn.transform(new CmpINode(mbit, bits)); 3090 Node* bol = _gvn.transform(new BoolNode(cmp, BoolTest::ne)); 3091 return generate_fair_guard(bol, region); 3092 } 3093 Node* LibraryCallKit::generate_interface_guard(Node* kls, RegionNode* region) { 3094 return generate_access_flags_guard(kls, JVM_ACC_INTERFACE, 0, region); 3095 } 3096 3097 //-------------------------inline_native_Class_query------------------- 3098 bool LibraryCallKit::inline_native_Class_query(vmIntrinsics::ID id) { 3099 const Type* return_type = TypeInt::BOOL; 3100 Node* prim_return_value = top(); // what happens if it's a primitive class? 3101 bool never_see_null = !too_many_traps(Deoptimization::Reason_null_check); 3102 bool expect_prim = false; // most of these guys expect to work on refs 3103 3104 enum { _normal_path = 1, _prim_path = 2, PATH_LIMIT }; 3105 3106 Node* mirror = argument(0); 3107 Node* obj = top(); 3108 3109 switch (id) { 3110 case vmIntrinsics::_isInstance: 3111 // nothing is an instance of a primitive type 3112 prim_return_value = intcon(0); 3113 obj = argument(1); 3114 break; 3115 case vmIntrinsics::_getModifiers: 3116 prim_return_value = intcon(JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC); 3117 assert(is_power_of_2((int)JVM_ACC_WRITTEN_FLAGS+1), "change next line"); 3118 return_type = TypeInt::make(0, JVM_ACC_WRITTEN_FLAGS, Type::WidenMin); 3119 break; 3120 case vmIntrinsics::_isInterface: 3121 prim_return_value = intcon(0); 3122 break; 3123 case vmIntrinsics::_isArray: 3124 prim_return_value = intcon(0); 3125 expect_prim = true; // cf. ObjectStreamClass.getClassSignature 3126 break; 3127 case vmIntrinsics::_isPrimitive: 3128 prim_return_value = intcon(1); 3129 expect_prim = true; // obviously 3130 break; 3131 case vmIntrinsics::_getSuperclass: 3132 prim_return_value = null(); 3133 return_type = TypeInstPtr::MIRROR->cast_to_ptr_type(TypePtr::BotPTR); 3134 break; 3135 case vmIntrinsics::_getClassAccessFlags: 3136 prim_return_value = intcon(JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC); 3137 return_type = TypeInt::INT; // not bool! 6297094 3138 break; 3139 default: 3140 fatal_unexpected_iid(id); 3141 break; 3142 } 3143 3144 const TypeInstPtr* mirror_con = _gvn.type(mirror)->isa_instptr(); 3145 if (mirror_con == NULL) return false; // cannot happen? 3146 3147 #ifndef PRODUCT 3148 if (C->print_intrinsics() || C->print_inlining()) { 3149 ciType* k = mirror_con->java_mirror_type(); 3150 if (k) { 3151 tty->print("Inlining %s on constant Class ", vmIntrinsics::name_at(intrinsic_id())); 3152 k->print_name(); 3153 tty->cr(); 3154 } 3155 } 3156 #endif 3157 3158 // Null-check the mirror, and the mirror's klass ptr (in case it is a primitive). 3159 RegionNode* region = new RegionNode(PATH_LIMIT); 3160 record_for_igvn(region); 3161 PhiNode* phi = new PhiNode(region, return_type); 3162 3163 // The mirror will never be null of Reflection.getClassAccessFlags, however 3164 // it may be null for Class.isInstance or Class.getModifiers. Throw a NPE 3165 // if it is. See bug 4774291. 3166 3167 // For Reflection.getClassAccessFlags(), the null check occurs in 3168 // the wrong place; see inline_unsafe_access(), above, for a similar 3169 // situation. 3170 mirror = null_check(mirror); 3171 // If mirror or obj is dead, only null-path is taken. 3172 if (stopped()) return true; 3173 3174 if (expect_prim) never_see_null = false; // expect nulls (meaning prims) 3175 3176 // Now load the mirror's klass metaobject, and null-check it. 3177 // Side-effects region with the control path if the klass is null. 3178 Node* kls = load_klass_from_mirror(mirror, never_see_null, region, _prim_path); 3179 // If kls is null, we have a primitive mirror. 3180 phi->init_req(_prim_path, prim_return_value); 3181 if (stopped()) { set_result(region, phi); return true; } 3182 bool safe_for_replace = (region->in(_prim_path) == top()); 3183 3184 Node* p; // handy temp 3185 Node* null_ctl; 3186 3187 // Now that we have the non-null klass, we can perform the real query. 3188 // For constant classes, the query will constant-fold in LoadNode::Value. 3189 Node* query_value = top(); 3190 switch (id) { 3191 case vmIntrinsics::_isInstance: 3192 // nothing is an instance of a primitive type 3193 query_value = gen_instanceof(obj, kls, safe_for_replace); 3194 break; 3195 3196 case vmIntrinsics::_getModifiers: 3197 p = basic_plus_adr(kls, in_bytes(Klass::modifier_flags_offset())); 3198 query_value = make_load(NULL, p, TypeInt::INT, T_INT, MemNode::unordered); 3199 break; 3200 3201 case vmIntrinsics::_isInterface: 3202 // (To verify this code sequence, check the asserts in JVM_IsInterface.) 3203 if (generate_interface_guard(kls, region) != NULL) 3204 // A guard was added. If the guard is taken, it was an interface. 3205 phi->add_req(intcon(1)); 3206 // If we fall through, it's a plain class. 3207 query_value = intcon(0); 3208 break; 3209 3210 case vmIntrinsics::_isArray: 3211 // (To verify this code sequence, check the asserts in JVM_IsArrayClass.) 3212 if (generate_array_guard(kls, region) != NULL) 3213 // A guard was added. If the guard is taken, it was an array. 3214 phi->add_req(intcon(1)); 3215 // If we fall through, it's a plain class. 3216 query_value = intcon(0); 3217 break; 3218 3219 case vmIntrinsics::_isPrimitive: 3220 query_value = intcon(0); // "normal" path produces false 3221 break; 3222 3223 case vmIntrinsics::_getSuperclass: 3224 // The rules here are somewhat unfortunate, but we can still do better 3225 // with random logic than with a JNI call. 3226 // Interfaces store null or Object as _super, but must report null. 3227 // Arrays store an intermediate super as _super, but must report Object. 3228 // Other types can report the actual _super. 3229 // (To verify this code sequence, check the asserts in JVM_IsInterface.) 3230 if (generate_interface_guard(kls, region) != NULL) 3231 // A guard was added. If the guard is taken, it was an interface. 3232 phi->add_req(null()); 3233 if (generate_array_guard(kls, region) != NULL) 3234 // A guard was added. If the guard is taken, it was an array. 3235 phi->add_req(makecon(TypeInstPtr::make(env()->Object_klass()->java_mirror()))); 3236 // If we fall through, it's a plain class. Get its _super. 3237 p = basic_plus_adr(kls, in_bytes(Klass::super_offset())); 3238 kls = _gvn.transform(LoadKlassNode::make(_gvn, NULL, immutable_memory(), p, TypeRawPtr::BOTTOM, TypeKlassPtr::OBJECT_OR_NULL)); 3239 null_ctl = top(); 3240 kls = null_check_oop(kls, &null_ctl); 3241 if (null_ctl != top()) { 3242 // If the guard is taken, Object.superClass is null (both klass and mirror). 3243 region->add_req(null_ctl); 3244 phi ->add_req(null()); 3245 } 3246 if (!stopped()) { 3247 query_value = load_mirror_from_klass(kls); 3248 } 3249 break; 3250 3251 case vmIntrinsics::_getClassAccessFlags: 3252 p = basic_plus_adr(kls, in_bytes(Klass::access_flags_offset())); 3253 query_value = make_load(NULL, p, TypeInt::INT, T_INT, MemNode::unordered); 3254 break; 3255 3256 default: 3257 fatal_unexpected_iid(id); 3258 break; 3259 } 3260 3261 // Fall-through is the normal case of a query to a real class. 3262 phi->init_req(1, query_value); 3263 region->init_req(1, control()); 3264 3265 C->set_has_split_ifs(true); // Has chance for split-if optimization 3266 set_result(region, phi); 3267 return true; 3268 } 3269 3270 //-------------------------inline_Class_cast------------------- 3271 bool LibraryCallKit::inline_Class_cast() { 3272 Node* mirror = argument(0); // Class 3273 Node* obj = argument(1); 3274 const TypeInstPtr* mirror_con = _gvn.type(mirror)->isa_instptr(); 3275 if (mirror_con == NULL) { 3276 return false; // dead path (mirror->is_top()). 3277 } 3278 if (obj == NULL || obj->is_top()) { 3279 return false; // dead path 3280 } 3281 const TypeOopPtr* tp = _gvn.type(obj)->isa_oopptr(); 3282 3283 // First, see if Class.cast() can be folded statically. 3284 // java_mirror_type() returns non-null for compile-time Class constants. 3285 ciType* tm = mirror_con->java_mirror_type(); 3286 if (tm != NULL && tm->is_klass() && 3287 tp != NULL && tp->klass() != NULL) { 3288 if (!tp->klass()->is_loaded()) { 3289 // Don't use intrinsic when class is not loaded. 3290 return false; 3291 } else { 3292 int static_res = C->static_subtype_check(tm->as_klass(), tp->klass()); 3293 if (static_res == Compile::SSC_always_true) { 3294 // isInstance() is true - fold the code. 3295 set_result(obj); 3296 return true; 3297 } else if (static_res == Compile::SSC_always_false) { 3298 // Don't use intrinsic, have to throw ClassCastException. 3299 // If the reference is null, the non-intrinsic bytecode will 3300 // be optimized appropriately. 3301 return false; 3302 } 3303 } 3304 } 3305 3306 // Bailout intrinsic and do normal inlining if exception path is frequent. 3307 if (too_many_traps(Deoptimization::Reason_intrinsic)) { 3308 return false; 3309 } 3310 3311 // Generate dynamic checks. 3312 // Class.cast() is java implementation of _checkcast bytecode. 3313 // Do checkcast (Parse::do_checkcast()) optimizations here. 3314 3315 mirror = null_check(mirror); 3316 // If mirror is dead, only null-path is taken. 3317 if (stopped()) { 3318 return true; 3319 } 3320 3321 // Not-subtype or the mirror's klass ptr is NULL (in case it is a primitive). 3322 enum { _bad_type_path = 1, _prim_path = 2, PATH_LIMIT }; 3323 RegionNode* region = new RegionNode(PATH_LIMIT); 3324 record_for_igvn(region); 3325 3326 // Now load the mirror's klass metaobject, and null-check it. 3327 // If kls is null, we have a primitive mirror and 3328 // nothing is an instance of a primitive type. 3329 Node* kls = load_klass_from_mirror(mirror, false, region, _prim_path); 3330 3331 Node* res = top(); 3332 if (!stopped()) { 3333 Node* bad_type_ctrl = top(); 3334 // Do checkcast optimizations. 3335 res = gen_checkcast(obj, kls, &bad_type_ctrl); 3336 region->init_req(_bad_type_path, bad_type_ctrl); 3337 } 3338 if (region->in(_prim_path) != top() || 3339 region->in(_bad_type_path) != top()) { 3340 // Let Interpreter throw ClassCastException. 3341 PreserveJVMState pjvms(this); 3342 set_control(_gvn.transform(region)); 3343 uncommon_trap(Deoptimization::Reason_intrinsic, 3344 Deoptimization::Action_maybe_recompile); 3345 } 3346 if (!stopped()) { 3347 set_result(res); 3348 } 3349 return true; 3350 } 3351 3352 3353 //--------------------------inline_native_subtype_check------------------------ 3354 // This intrinsic takes the JNI calls out of the heart of 3355 // UnsafeFieldAccessorImpl.set, which improves Field.set, readObject, etc. 3356 bool LibraryCallKit::inline_native_subtype_check() { 3357 // Pull both arguments off the stack. 3358 Node* args[2]; // two java.lang.Class mirrors: superc, subc 3359 args[0] = argument(0); 3360 args[1] = argument(1); 3361 Node* klasses[2]; // corresponding Klasses: superk, subk 3362 klasses[0] = klasses[1] = top(); 3363 3364 enum { 3365 // A full decision tree on {superc is prim, subc is prim}: 3366 _prim_0_path = 1, // {P,N} => false 3367 // {P,P} & superc!=subc => false 3368 _prim_same_path, // {P,P} & superc==subc => true 3369 _prim_1_path, // {N,P} => false 3370 _ref_subtype_path, // {N,N} & subtype check wins => true 3371 _both_ref_path, // {N,N} & subtype check loses => false 3372 PATH_LIMIT 3373 }; 3374 3375 RegionNode* region = new RegionNode(PATH_LIMIT); 3376 Node* phi = new PhiNode(region, TypeInt::BOOL); 3377 record_for_igvn(region); 3378 3379 const TypePtr* adr_type = TypeRawPtr::BOTTOM; // memory type of loads 3380 const TypeKlassPtr* kls_type = TypeKlassPtr::OBJECT_OR_NULL; 3381 int class_klass_offset = java_lang_Class::klass_offset_in_bytes(); 3382 3383 // First null-check both mirrors and load each mirror's klass metaobject. 3384 int which_arg; 3385 for (which_arg = 0; which_arg <= 1; which_arg++) { 3386 Node* arg = args[which_arg]; 3387 arg = null_check(arg); 3388 if (stopped()) break; 3389 args[which_arg] = arg; 3390 3391 Node* p = basic_plus_adr(arg, class_klass_offset); 3392 Node* kls = LoadKlassNode::make(_gvn, NULL, immutable_memory(), p, adr_type, kls_type); 3393 klasses[which_arg] = _gvn.transform(kls); 3394 } 3395 3396 // Resolve oops to stable for CmpP below. 3397 args[0] = access_resolve(args[0], 0); 3398 args[1] = access_resolve(args[1], 0); 3399 3400 // Having loaded both klasses, test each for null. 3401 bool never_see_null = !too_many_traps(Deoptimization::Reason_null_check); 3402 for (which_arg = 0; which_arg <= 1; which_arg++) { 3403 Node* kls = klasses[which_arg]; 3404 Node* null_ctl = top(); 3405 kls = null_check_oop(kls, &null_ctl, never_see_null); 3406 int prim_path = (which_arg == 0 ? _prim_0_path : _prim_1_path); 3407 region->init_req(prim_path, null_ctl); 3408 if (stopped()) break; 3409 klasses[which_arg] = kls; 3410 } 3411 3412 if (!stopped()) { 3413 // now we have two reference types, in klasses[0..1] 3414 Node* subk = klasses[1]; // the argument to isAssignableFrom 3415 Node* superk = klasses[0]; // the receiver 3416 region->set_req(_both_ref_path, gen_subtype_check(subk, superk)); 3417 // now we have a successful reference subtype check 3418 region->set_req(_ref_subtype_path, control()); 3419 } 3420 3421 // If both operands are primitive (both klasses null), then 3422 // we must return true when they are identical primitives. 3423 // It is convenient to test this after the first null klass check. 3424 set_control(region->in(_prim_0_path)); // go back to first null check 3425 if (!stopped()) { 3426 // Since superc is primitive, make a guard for the superc==subc case. 3427 Node* cmp_eq = _gvn.transform(new CmpPNode(args[0], args[1])); 3428 Node* bol_eq = _gvn.transform(new BoolNode(cmp_eq, BoolTest::eq)); 3429 generate_guard(bol_eq, region, PROB_FAIR); 3430 if (region->req() == PATH_LIMIT+1) { 3431 // A guard was added. If the added guard is taken, superc==subc. 3432 region->swap_edges(PATH_LIMIT, _prim_same_path); 3433 region->del_req(PATH_LIMIT); 3434 } 3435 region->set_req(_prim_0_path, control()); // Not equal after all. 3436 } 3437 3438 // these are the only paths that produce 'true': 3439 phi->set_req(_prim_same_path, intcon(1)); 3440 phi->set_req(_ref_subtype_path, intcon(1)); 3441 3442 // pull together the cases: 3443 assert(region->req() == PATH_LIMIT, "sane region"); 3444 for (uint i = 1; i < region->req(); i++) { 3445 Node* ctl = region->in(i); 3446 if (ctl == NULL || ctl == top()) { 3447 region->set_req(i, top()); 3448 phi ->set_req(i, top()); 3449 } else if (phi->in(i) == NULL) { 3450 phi->set_req(i, intcon(0)); // all other paths produce 'false' 3451 } 3452 } 3453 3454 set_control(_gvn.transform(region)); 3455 set_result(_gvn.transform(phi)); 3456 return true; 3457 } 3458 3459 //---------------------generate_array_guard_common------------------------ 3460 Node* LibraryCallKit::generate_array_guard_common(Node* kls, RegionNode* region, 3461 bool obj_array, bool not_array) { 3462 3463 if (stopped()) { 3464 return NULL; 3465 } 3466 3467 // If obj_array/non_array==false/false: 3468 // Branch around if the given klass is in fact an array (either obj or prim). 3469 // If obj_array/non_array==false/true: 3470 // Branch around if the given klass is not an array klass of any kind. 3471 // If obj_array/non_array==true/true: 3472 // Branch around if the kls is not an oop array (kls is int[], String, etc.) 3473 // If obj_array/non_array==true/false: 3474 // Branch around if the kls is an oop array (Object[] or subtype) 3475 // 3476 // Like generate_guard, adds a new path onto the region. 3477 jint layout_con = 0; 3478 Node* layout_val = get_layout_helper(kls, layout_con); 3479 if (layout_val == NULL) { 3480 bool query = (obj_array 3481 ? Klass::layout_helper_is_objArray(layout_con) 3482 : Klass::layout_helper_is_array(layout_con)); 3483 if (query == not_array) { 3484 return NULL; // never a branch 3485 } else { // always a branch 3486 Node* always_branch = control(); 3487 if (region != NULL) 3488 region->add_req(always_branch); 3489 set_control(top()); 3490 return always_branch; 3491 } 3492 } 3493 // Now test the correct condition. 3494 jint nval = (obj_array 3495 ? (jint)(Klass::_lh_array_tag_type_value 3496 << Klass::_lh_array_tag_shift) 3497 : Klass::_lh_neutral_value); 3498 Node* cmp = _gvn.transform(new CmpINode(layout_val, intcon(nval))); 3499 BoolTest::mask btest = BoolTest::lt; // correct for testing is_[obj]array 3500 // invert the test if we are looking for a non-array 3501 if (not_array) btest = BoolTest(btest).negate(); 3502 Node* bol = _gvn.transform(new BoolNode(cmp, btest)); 3503 return generate_fair_guard(bol, region); 3504 } 3505 3506 3507 //-----------------------inline_native_newArray-------------------------- 3508 // private static native Object java.lang.reflect.newArray(Class<?> componentType, int length); 3509 // private native Object Unsafe.allocateUninitializedArray0(Class<?> cls, int size); 3510 bool LibraryCallKit::inline_unsafe_newArray(bool uninitialized) { 3511 Node* mirror; 3512 Node* count_val; 3513 if (uninitialized) { 3514 mirror = argument(1); 3515 count_val = argument(2); 3516 } else { 3517 mirror = argument(0); 3518 count_val = argument(1); 3519 } 3520 3521 mirror = null_check(mirror); 3522 // If mirror or obj is dead, only null-path is taken. 3523 if (stopped()) return true; 3524 3525 enum { _normal_path = 1, _slow_path = 2, PATH_LIMIT }; 3526 RegionNode* result_reg = new RegionNode(PATH_LIMIT); 3527 PhiNode* result_val = new PhiNode(result_reg, TypeInstPtr::NOTNULL); 3528 PhiNode* result_io = new PhiNode(result_reg, Type::ABIO); 3529 PhiNode* result_mem = new PhiNode(result_reg, Type::MEMORY, TypePtr::BOTTOM); 3530 3531 bool never_see_null = !too_many_traps(Deoptimization::Reason_null_check); 3532 Node* klass_node = load_array_klass_from_mirror(mirror, never_see_null, 3533 result_reg, _slow_path); 3534 Node* normal_ctl = control(); 3535 Node* no_array_ctl = result_reg->in(_slow_path); 3536 3537 // Generate code for the slow case. We make a call to newArray(). 3538 set_control(no_array_ctl); 3539 if (!stopped()) { 3540 // Either the input type is void.class, or else the 3541 // array klass has not yet been cached. Either the 3542 // ensuing call will throw an exception, or else it 3543 // will cache the array klass for next time. 3544 PreserveJVMState pjvms(this); 3545 CallJavaNode* slow_call = generate_method_call_static(vmIntrinsics::_newArray); 3546 Node* slow_result = set_results_for_java_call(slow_call); 3547 // this->control() comes from set_results_for_java_call 3548 result_reg->set_req(_slow_path, control()); 3549 result_val->set_req(_slow_path, slow_result); 3550 result_io ->set_req(_slow_path, i_o()); 3551 result_mem->set_req(_slow_path, reset_memory()); 3552 } 3553 3554 set_control(normal_ctl); 3555 if (!stopped()) { 3556 // Normal case: The array type has been cached in the java.lang.Class. 3557 // The following call works fine even if the array type is polymorphic. 3558 // It could be a dynamic mix of int[], boolean[], Object[], etc. 3559 Node* obj = new_array(klass_node, count_val, 0); // no arguments to push 3560 result_reg->init_req(_normal_path, control()); 3561 result_val->init_req(_normal_path, obj); 3562 result_io ->init_req(_normal_path, i_o()); 3563 result_mem->init_req(_normal_path, reset_memory()); 3564 3565 if (uninitialized) { 3566 // Mark the allocation so that zeroing is skipped 3567 AllocateArrayNode* alloc = AllocateArrayNode::Ideal_array_allocation(obj, &_gvn); 3568 alloc->maybe_set_complete(&_gvn); 3569 } 3570 } 3571 3572 // Return the combined state. 3573 set_i_o( _gvn.transform(result_io) ); 3574 set_all_memory( _gvn.transform(result_mem)); 3575 3576 C->set_has_split_ifs(true); // Has chance for split-if optimization 3577 set_result(result_reg, result_val); 3578 return true; 3579 } 3580 3581 //----------------------inline_native_getLength-------------------------- 3582 // public static native int java.lang.reflect.Array.getLength(Object array); 3583 bool LibraryCallKit::inline_native_getLength() { 3584 if (too_many_traps(Deoptimization::Reason_intrinsic)) return false; 3585 3586 Node* array = null_check(argument(0)); 3587 // If array is dead, only null-path is taken. 3588 if (stopped()) return true; 3589 3590 // Deoptimize if it is a non-array. 3591 Node* non_array = generate_non_array_guard(load_object_klass(array), NULL); 3592 3593 if (non_array != NULL) { 3594 PreserveJVMState pjvms(this); 3595 set_control(non_array); 3596 uncommon_trap(Deoptimization::Reason_intrinsic, 3597 Deoptimization::Action_maybe_recompile); 3598 } 3599 3600 // If control is dead, only non-array-path is taken. 3601 if (stopped()) return true; 3602 3603 // The works fine even if the array type is polymorphic. 3604 // It could be a dynamic mix of int[], boolean[], Object[], etc. 3605 Node* result = load_array_length(array); 3606 3607 C->set_has_split_ifs(true); // Has chance for split-if optimization 3608 set_result(result); 3609 return true; 3610 } 3611 3612 //------------------------inline_array_copyOf---------------------------- 3613 // public static <T,U> T[] java.util.Arrays.copyOf( U[] original, int newLength, Class<? extends T[]> newType); 3614 // public static <T,U> T[] java.util.Arrays.copyOfRange(U[] original, int from, int to, Class<? extends T[]> newType); 3615 bool LibraryCallKit::inline_array_copyOf(bool is_copyOfRange) { 3616 if (too_many_traps(Deoptimization::Reason_intrinsic)) return false; 3617 3618 // Get the arguments. 3619 Node* original = argument(0); 3620 Node* start = is_copyOfRange? argument(1): intcon(0); 3621 Node* end = is_copyOfRange? argument(2): argument(1); 3622 Node* array_type_mirror = is_copyOfRange? argument(3): argument(2); 3623 3624 Node* newcopy = NULL; 3625 3626 // Set the original stack and the reexecute bit for the interpreter to reexecute 3627 // the bytecode that invokes Arrays.copyOf if deoptimization happens. 3628 { PreserveReexecuteState preexecs(this); 3629 jvms()->set_should_reexecute(true); 3630 3631 array_type_mirror = null_check(array_type_mirror); 3632 original = null_check(original); 3633 3634 // Check if a null path was taken unconditionally. 3635 if (stopped()) return true; 3636 3637 Node* orig_length = load_array_length(original); 3638 3639 Node* klass_node = load_klass_from_mirror(array_type_mirror, false, NULL, 0); 3640 klass_node = null_check(klass_node); 3641 3642 RegionNode* bailout = new RegionNode(1); 3643 record_for_igvn(bailout); 3644 3645 // Despite the generic type of Arrays.copyOf, the mirror might be int, int[], etc. 3646 // Bail out if that is so. 3647 Node* not_objArray = generate_non_objArray_guard(klass_node, bailout); 3648 if (not_objArray != NULL) { 3649 // Improve the klass node's type from the new optimistic assumption: 3650 ciKlass* ak = ciArrayKlass::make(env()->Object_klass()); 3651 const Type* akls = TypeKlassPtr::make(TypePtr::NotNull, ak, 0/*offset*/); 3652 Node* cast = new CastPPNode(klass_node, akls); 3653 cast->init_req(0, control()); 3654 klass_node = _gvn.transform(cast); 3655 } 3656 3657 // Bail out if either start or end is negative. 3658 generate_negative_guard(start, bailout, &start); 3659 generate_negative_guard(end, bailout, &end); 3660 3661 Node* length = end; 3662 if (_gvn.type(start) != TypeInt::ZERO) { 3663 length = _gvn.transform(new SubINode(end, start)); 3664 } 3665 3666 // Bail out if length is negative. 3667 // Without this the new_array would throw 3668 // NegativeArraySizeException but IllegalArgumentException is what 3669 // should be thrown 3670 generate_negative_guard(length, bailout, &length); 3671 3672 if (bailout->req() > 1) { 3673 PreserveJVMState pjvms(this); 3674 set_control(_gvn.transform(bailout)); 3675 uncommon_trap(Deoptimization::Reason_intrinsic, 3676 Deoptimization::Action_maybe_recompile); 3677 } 3678 3679 if (!stopped()) { 3680 // How many elements will we copy from the original? 3681 // The answer is MinI(orig_length - start, length). 3682 Node* orig_tail = _gvn.transform(new SubINode(orig_length, start)); 3683 Node* moved = generate_min_max(vmIntrinsics::_min, orig_tail, length); 3684 3685 original = access_resolve(original, ACCESS_READ); 3686 3687 // Generate a direct call to the right arraycopy function(s). 3688 // We know the copy is disjoint but we might not know if the 3689 // oop stores need checking. 3690 // Extreme case: Arrays.copyOf((Integer[])x, 10, String[].class). 3691 // This will fail a store-check if x contains any non-nulls. 3692 3693 // ArrayCopyNode:Ideal may transform the ArrayCopyNode to 3694 // loads/stores but it is legal only if we're sure the 3695 // Arrays.copyOf would succeed. So we need all input arguments 3696 // to the copyOf to be validated, including that the copy to the 3697 // new array won't trigger an ArrayStoreException. That subtype 3698 // check can be optimized if we know something on the type of 3699 // the input array from type speculation. 3700 if (_gvn.type(klass_node)->singleton()) { 3701 ciKlass* subk = _gvn.type(load_object_klass(original))->is_klassptr()->klass(); 3702 ciKlass* superk = _gvn.type(klass_node)->is_klassptr()->klass(); 3703 3704 int test = C->static_subtype_check(superk, subk); 3705 if (test != Compile::SSC_always_true && test != Compile::SSC_always_false) { 3706 const TypeOopPtr* t_original = _gvn.type(original)->is_oopptr(); 3707 if (t_original->speculative_type() != NULL) { 3708 original = maybe_cast_profiled_obj(original, t_original->speculative_type(), true); 3709 } 3710 } 3711 } 3712 3713 bool validated = false; 3714 // Reason_class_check rather than Reason_intrinsic because we 3715 // want to intrinsify even if this traps. 3716 if (!too_many_traps(Deoptimization::Reason_class_check)) { 3717 Node* not_subtype_ctrl = gen_subtype_check(load_object_klass(original), 3718 klass_node); 3719 3720 if (not_subtype_ctrl != top()) { 3721 PreserveJVMState pjvms(this); 3722 set_control(not_subtype_ctrl); 3723 uncommon_trap(Deoptimization::Reason_class_check, 3724 Deoptimization::Action_make_not_entrant); 3725 assert(stopped(), "Should be stopped"); 3726 } 3727 validated = true; 3728 } 3729 3730 if (!stopped()) { 3731 newcopy = new_array(klass_node, length, 0); // no arguments to push 3732 3733 ArrayCopyNode* ac = ArrayCopyNode::make(this, true, original, start, newcopy, intcon(0), moved, true, false, 3734 load_object_klass(original), klass_node); 3735 if (!is_copyOfRange) { 3736 ac->set_copyof(validated); 3737 } else { 3738 ac->set_copyofrange(validated); 3739 } 3740 Node* n = _gvn.transform(ac); 3741 if (n == ac) { 3742 ac->connect_outputs(this); 3743 } else { 3744 assert(validated, "shouldn't transform if all arguments not validated"); 3745 set_all_memory(n); 3746 } 3747 } 3748 } 3749 } // original reexecute is set back here 3750 3751 C->set_has_split_ifs(true); // Has chance for split-if optimization 3752 if (!stopped()) { 3753 set_result(newcopy); 3754 } 3755 return true; 3756 } 3757 3758 3759 //----------------------generate_virtual_guard--------------------------- 3760 // Helper for hashCode and clone. Peeks inside the vtable to avoid a call. 3761 Node* LibraryCallKit::generate_virtual_guard(Node* obj_klass, 3762 RegionNode* slow_region) { 3763 ciMethod* method = callee(); 3764 int vtable_index = method->vtable_index(); 3765 assert(vtable_index >= 0 || vtable_index == Method::nonvirtual_vtable_index, 3766 "bad index %d", vtable_index); 3767 // Get the Method* out of the appropriate vtable entry. 3768 int entry_offset = in_bytes(Klass::vtable_start_offset()) + 3769 vtable_index*vtableEntry::size_in_bytes() + 3770 vtableEntry::method_offset_in_bytes(); 3771 Node* entry_addr = basic_plus_adr(obj_klass, entry_offset); 3772 Node* target_call = make_load(NULL, entry_addr, TypePtr::NOTNULL, T_ADDRESS, MemNode::unordered); 3773 3774 // Compare the target method with the expected method (e.g., Object.hashCode). 3775 const TypePtr* native_call_addr = TypeMetadataPtr::make(method); 3776 3777 Node* native_call = makecon(native_call_addr); 3778 Node* chk_native = _gvn.transform(new CmpPNode(target_call, native_call)); 3779 Node* test_native = _gvn.transform(new BoolNode(chk_native, BoolTest::ne)); 3780 3781 return generate_slow_guard(test_native, slow_region); 3782 } 3783 3784 //-----------------------generate_method_call---------------------------- 3785 // Use generate_method_call to make a slow-call to the real 3786 // method if the fast path fails. An alternative would be to 3787 // use a stub like OptoRuntime::slow_arraycopy_Java. 3788 // This only works for expanding the current library call, 3789 // not another intrinsic. (E.g., don't use this for making an 3790 // arraycopy call inside of the copyOf intrinsic.) 3791 CallJavaNode* 3792 LibraryCallKit::generate_method_call(vmIntrinsics::ID method_id, bool is_virtual, bool is_static) { 3793 // When compiling the intrinsic method itself, do not use this technique. 3794 guarantee(callee() != C->method(), "cannot make slow-call to self"); 3795 3796 ciMethod* method = callee(); 3797 // ensure the JVMS we have will be correct for this call 3798 guarantee(method_id == method->intrinsic_id(), "must match"); 3799 3800 const TypeFunc* tf = TypeFunc::make(method); 3801 CallJavaNode* slow_call; 3802 if (is_static) { 3803 assert(!is_virtual, ""); 3804 slow_call = new CallStaticJavaNode(C, tf, 3805 SharedRuntime::get_resolve_static_call_stub(), 3806 method, bci()); 3807 } else if (is_virtual) { 3808 null_check_receiver(); 3809 int vtable_index = Method::invalid_vtable_index; 3810 if (UseInlineCaches) { 3811 // Suppress the vtable call 3812 } else { 3813 // hashCode and clone are not a miranda methods, 3814 // so the vtable index is fixed. 3815 // No need to use the linkResolver to get it. 3816 vtable_index = method->vtable_index(); 3817 assert(vtable_index >= 0 || vtable_index == Method::nonvirtual_vtable_index, 3818 "bad index %d", vtable_index); 3819 } 3820 slow_call = new CallDynamicJavaNode(tf, 3821 SharedRuntime::get_resolve_virtual_call_stub(), 3822 method, vtable_index, bci()); 3823 } else { // neither virtual nor static: opt_virtual 3824 null_check_receiver(); 3825 slow_call = new CallStaticJavaNode(C, tf, 3826 SharedRuntime::get_resolve_opt_virtual_call_stub(), 3827 method, bci()); 3828 slow_call->set_optimized_virtual(true); 3829 } 3830 if (CallGenerator::is_inlined_method_handle_intrinsic(this->method(), bci(), callee())) { 3831 // To be able to issue a direct call (optimized virtual or virtual) 3832 // and skip a call to MH.linkTo*/invokeBasic adapter, additional information 3833 // about the method being invoked should be attached to the call site to 3834 // make resolution logic work (see SharedRuntime::resolve_{virtual,opt_virtual}_call_C). 3835 slow_call->set_override_symbolic_info(true); 3836 } 3837 set_arguments_for_java_call(slow_call); 3838 set_edges_for_java_call(slow_call); 3839 return slow_call; 3840 } 3841 3842 3843 /** 3844 * Build special case code for calls to hashCode on an object. This call may 3845 * be virtual (invokevirtual) or bound (invokespecial). For each case we generate 3846 * slightly different code. 3847 */ 3848 bool LibraryCallKit::inline_native_hashcode(bool is_virtual, bool is_static) { 3849 assert(is_static == callee()->is_static(), "correct intrinsic selection"); 3850 assert(!(is_virtual && is_static), "either virtual, special, or static"); 3851 3852 enum { _slow_path = 1, _fast_path, _null_path, PATH_LIMIT }; 3853 3854 RegionNode* result_reg = new RegionNode(PATH_LIMIT); 3855 PhiNode* result_val = new PhiNode(result_reg, TypeInt::INT); 3856 PhiNode* result_io = new PhiNode(result_reg, Type::ABIO); 3857 PhiNode* result_mem = new PhiNode(result_reg, Type::MEMORY, TypePtr::BOTTOM); 3858 Node* obj = NULL; 3859 if (!is_static) { 3860 // Check for hashing null object 3861 obj = null_check_receiver(); 3862 if (stopped()) return true; // unconditionally null 3863 result_reg->init_req(_null_path, top()); 3864 result_val->init_req(_null_path, top()); 3865 } else { 3866 // Do a null check, and return zero if null. 3867 // System.identityHashCode(null) == 0 3868 obj = argument(0); 3869 Node* null_ctl = top(); 3870 obj = null_check_oop(obj, &null_ctl); 3871 result_reg->init_req(_null_path, null_ctl); 3872 result_val->init_req(_null_path, _gvn.intcon(0)); 3873 } 3874 3875 // Unconditionally null? Then return right away. 3876 if (stopped()) { 3877 set_control( result_reg->in(_null_path)); 3878 if (!stopped()) 3879 set_result(result_val->in(_null_path)); 3880 return true; 3881 } 3882 3883 // We only go to the fast case code if we pass a number of guards. The 3884 // paths which do not pass are accumulated in the slow_region. 3885 RegionNode* slow_region = new RegionNode(1); 3886 record_for_igvn(slow_region); 3887 3888 // If this is a virtual call, we generate a funny guard. We pull out 3889 // the vtable entry corresponding to hashCode() from the target object. 3890 // If the target method which we are calling happens to be the native 3891 // Object hashCode() method, we pass the guard. We do not need this 3892 // guard for non-virtual calls -- the caller is known to be the native 3893 // Object hashCode(). 3894 if (is_virtual) { 3895 // After null check, get the object's klass. 3896 Node* obj_klass = load_object_klass(obj); 3897 generate_virtual_guard(obj_klass, slow_region); 3898 } 3899 3900 // Get the header out of the object, use LoadMarkNode when available 3901 Node* header_addr = basic_plus_adr(obj, oopDesc::mark_offset_in_bytes()); 3902 // The control of the load must be NULL. Otherwise, the load can move before 3903 // the null check after castPP removal. 3904 Node* no_ctrl = NULL; 3905 Node* header = make_load(no_ctrl, header_addr, TypeX_X, TypeX_X->basic_type(), MemNode::unordered); 3906 3907 // Test the header to see if it is unlocked. 3908 Node *lock_mask = _gvn.MakeConX(markWord::biased_lock_mask_in_place); 3909 Node *lmasked_header = _gvn.transform(new AndXNode(header, lock_mask)); 3910 Node *unlocked_val = _gvn.MakeConX(markWord::unlocked_value); 3911 Node *chk_unlocked = _gvn.transform(new CmpXNode( lmasked_header, unlocked_val)); 3912 Node *test_unlocked = _gvn.transform(new BoolNode( chk_unlocked, BoolTest::ne)); 3913 3914 generate_slow_guard(test_unlocked, slow_region); 3915 3916 // Get the hash value and check to see that it has been properly assigned. 3917 // We depend on hash_mask being at most 32 bits and avoid the use of 3918 // hash_mask_in_place because it could be larger than 32 bits in a 64-bit 3919 // vm: see markWord.hpp. 3920 Node *hash_mask = _gvn.intcon(markWord::hash_mask); 3921 Node *hash_shift = _gvn.intcon(markWord::hash_shift); 3922 Node *hshifted_header= _gvn.transform(new URShiftXNode(header, hash_shift)); 3923 // This hack lets the hash bits live anywhere in the mark object now, as long 3924 // as the shift drops the relevant bits into the low 32 bits. Note that 3925 // Java spec says that HashCode is an int so there's no point in capturing 3926 // an 'X'-sized hashcode (32 in 32-bit build or 64 in 64-bit build). 3927 hshifted_header = ConvX2I(hshifted_header); 3928 Node *hash_val = _gvn.transform(new AndINode(hshifted_header, hash_mask)); 3929 3930 Node *no_hash_val = _gvn.intcon(markWord::no_hash); 3931 Node *chk_assigned = _gvn.transform(new CmpINode( hash_val, no_hash_val)); 3932 Node *test_assigned = _gvn.transform(new BoolNode( chk_assigned, BoolTest::eq)); 3933 3934 generate_slow_guard(test_assigned, slow_region); 3935 3936 Node* init_mem = reset_memory(); 3937 // fill in the rest of the null path: 3938 result_io ->init_req(_null_path, i_o()); 3939 result_mem->init_req(_null_path, init_mem); 3940 3941 result_val->init_req(_fast_path, hash_val); 3942 result_reg->init_req(_fast_path, control()); 3943 result_io ->init_req(_fast_path, i_o()); 3944 result_mem->init_req(_fast_path, init_mem); 3945 3946 // Generate code for the slow case. We make a call to hashCode(). 3947 set_control(_gvn.transform(slow_region)); 3948 if (!stopped()) { 3949 // No need for PreserveJVMState, because we're using up the present state. 3950 set_all_memory(init_mem); 3951 vmIntrinsics::ID hashCode_id = is_static ? vmIntrinsics::_identityHashCode : vmIntrinsics::_hashCode; 3952 CallJavaNode* slow_call = generate_method_call(hashCode_id, is_virtual, is_static); 3953 Node* slow_result = set_results_for_java_call(slow_call); 3954 // this->control() comes from set_results_for_java_call 3955 result_reg->init_req(_slow_path, control()); 3956 result_val->init_req(_slow_path, slow_result); 3957 result_io ->set_req(_slow_path, i_o()); 3958 result_mem ->set_req(_slow_path, reset_memory()); 3959 } 3960 3961 // Return the combined state. 3962 set_i_o( _gvn.transform(result_io) ); 3963 set_all_memory( _gvn.transform(result_mem)); 3964 3965 set_result(result_reg, result_val); 3966 return true; 3967 } 3968 3969 //---------------------------inline_native_getClass---------------------------- 3970 // public final native Class<?> java.lang.Object.getClass(); 3971 // 3972 // Build special case code for calls to getClass on an object. 3973 bool LibraryCallKit::inline_native_getClass() { 3974 Node* obj = null_check_receiver(); 3975 if (stopped()) return true; 3976 set_result(load_mirror_from_klass(load_object_klass(obj))); 3977 return true; 3978 } 3979 3980 //-----------------inline_native_Reflection_getCallerClass--------------------- 3981 // public static native Class<?> sun.reflect.Reflection.getCallerClass(); 3982 // 3983 // In the presence of deep enough inlining, getCallerClass() becomes a no-op. 3984 // 3985 // NOTE: This code must perform the same logic as JVM_GetCallerClass 3986 // in that it must skip particular security frames and checks for 3987 // caller sensitive methods. 3988 bool LibraryCallKit::inline_native_Reflection_getCallerClass() { 3989 #ifndef PRODUCT 3990 if ((C->print_intrinsics() || C->print_inlining()) && Verbose) { 3991 tty->print_cr("Attempting to inline sun.reflect.Reflection.getCallerClass"); 3992 } 3993 #endif 3994 3995 if (!jvms()->has_method()) { 3996 #ifndef PRODUCT 3997 if ((C->print_intrinsics() || C->print_inlining()) && Verbose) { 3998 tty->print_cr(" Bailing out because intrinsic was inlined at top level"); 3999 } 4000 #endif 4001 return false; 4002 } 4003 4004 // Walk back up the JVM state to find the caller at the required 4005 // depth. 4006 JVMState* caller_jvms = jvms(); 4007 4008 // Cf. JVM_GetCallerClass 4009 // NOTE: Start the loop at depth 1 because the current JVM state does 4010 // not include the Reflection.getCallerClass() frame. 4011 for (int n = 1; caller_jvms != NULL; caller_jvms = caller_jvms->caller(), n++) { 4012 ciMethod* m = caller_jvms->method(); 4013 switch (n) { 4014 case 0: 4015 fatal("current JVM state does not include the Reflection.getCallerClass frame"); 4016 break; 4017 case 1: 4018 // Frame 0 and 1 must be caller sensitive (see JVM_GetCallerClass). 4019 if (!m->caller_sensitive()) { 4020 #ifndef PRODUCT 4021 if ((C->print_intrinsics() || C->print_inlining()) && Verbose) { 4022 tty->print_cr(" Bailing out: CallerSensitive annotation expected at frame %d", n); 4023 } 4024 #endif 4025 return false; // bail-out; let JVM_GetCallerClass do the work 4026 } 4027 break; 4028 default: 4029 if (!m->is_ignored_by_security_stack_walk()) { 4030 // We have reached the desired frame; return the holder class. 4031 // Acquire method holder as java.lang.Class and push as constant. 4032 ciInstanceKlass* caller_klass = caller_jvms->method()->holder(); 4033 ciInstance* caller_mirror = caller_klass->java_mirror(); 4034 set_result(makecon(TypeInstPtr::make(caller_mirror))); 4035 4036 #ifndef PRODUCT 4037 if ((C->print_intrinsics() || C->print_inlining()) && Verbose) { 4038 tty->print_cr(" Succeeded: caller = %d) %s.%s, JVMS depth = %d", n, caller_klass->name()->as_utf8(), caller_jvms->method()->name()->as_utf8(), jvms()->depth()); 4039 tty->print_cr(" JVM state at this point:"); 4040 for (int i = jvms()->depth(), n = 1; i >= 1; i--, n++) { 4041 ciMethod* m = jvms()->of_depth(i)->method(); 4042 tty->print_cr(" %d) %s.%s", n, m->holder()->name()->as_utf8(), m->name()->as_utf8()); 4043 } 4044 } 4045 #endif 4046 return true; 4047 } 4048 break; 4049 } 4050 } 4051 4052 #ifndef PRODUCT 4053 if ((C->print_intrinsics() || C->print_inlining()) && Verbose) { 4054 tty->print_cr(" Bailing out because caller depth exceeded inlining depth = %d", jvms()->depth()); 4055 tty->print_cr(" JVM state at this point:"); 4056 for (int i = jvms()->depth(), n = 1; i >= 1; i--, n++) { 4057 ciMethod* m = jvms()->of_depth(i)->method(); 4058 tty->print_cr(" %d) %s.%s", n, m->holder()->name()->as_utf8(), m->name()->as_utf8()); 4059 } 4060 } 4061 #endif 4062 4063 return false; // bail-out; let JVM_GetCallerClass do the work 4064 } 4065 4066 bool LibraryCallKit::inline_fp_conversions(vmIntrinsics::ID id) { 4067 Node* arg = argument(0); 4068 Node* result = NULL; 4069 4070 switch (id) { 4071 case vmIntrinsics::_floatToRawIntBits: result = new MoveF2INode(arg); break; 4072 case vmIntrinsics::_intBitsToFloat: result = new MoveI2FNode(arg); break; 4073 case vmIntrinsics::_doubleToRawLongBits: result = new MoveD2LNode(arg); break; 4074 case vmIntrinsics::_longBitsToDouble: result = new MoveL2DNode(arg); break; 4075 4076 case vmIntrinsics::_doubleToLongBits: { 4077 // two paths (plus control) merge in a wood 4078 RegionNode *r = new RegionNode(3); 4079 Node *phi = new PhiNode(r, TypeLong::LONG); 4080 4081 Node *cmpisnan = _gvn.transform(new CmpDNode(arg, arg)); 4082 // Build the boolean node 4083 Node *bolisnan = _gvn.transform(new BoolNode(cmpisnan, BoolTest::ne)); 4084 4085 // Branch either way. 4086 // NaN case is less traveled, which makes all the difference. 4087 IfNode *ifisnan = create_and_xform_if(control(), bolisnan, PROB_STATIC_FREQUENT, COUNT_UNKNOWN); 4088 Node *opt_isnan = _gvn.transform(ifisnan); 4089 assert( opt_isnan->is_If(), "Expect an IfNode"); 4090 IfNode *opt_ifisnan = (IfNode*)opt_isnan; 4091 Node *iftrue = _gvn.transform(new IfTrueNode(opt_ifisnan)); 4092 4093 set_control(iftrue); 4094 4095 static const jlong nan_bits = CONST64(0x7ff8000000000000); 4096 Node *slow_result = longcon(nan_bits); // return NaN 4097 phi->init_req(1, _gvn.transform( slow_result )); 4098 r->init_req(1, iftrue); 4099 4100 // Else fall through 4101 Node *iffalse = _gvn.transform(new IfFalseNode(opt_ifisnan)); 4102 set_control(iffalse); 4103 4104 phi->init_req(2, _gvn.transform(new MoveD2LNode(arg))); 4105 r->init_req(2, iffalse); 4106 4107 // Post merge 4108 set_control(_gvn.transform(r)); 4109 record_for_igvn(r); 4110 4111 C->set_has_split_ifs(true); // Has chance for split-if optimization 4112 result = phi; 4113 assert(result->bottom_type()->isa_long(), "must be"); 4114 break; 4115 } 4116 4117 case vmIntrinsics::_floatToIntBits: { 4118 // two paths (plus control) merge in a wood 4119 RegionNode *r = new RegionNode(3); 4120 Node *phi = new PhiNode(r, TypeInt::INT); 4121 4122 Node *cmpisnan = _gvn.transform(new CmpFNode(arg, arg)); 4123 // Build the boolean node 4124 Node *bolisnan = _gvn.transform(new BoolNode(cmpisnan, BoolTest::ne)); 4125 4126 // Branch either way. 4127 // NaN case is less traveled, which makes all the difference. 4128 IfNode *ifisnan = create_and_xform_if(control(), bolisnan, PROB_STATIC_FREQUENT, COUNT_UNKNOWN); 4129 Node *opt_isnan = _gvn.transform(ifisnan); 4130 assert( opt_isnan->is_If(), "Expect an IfNode"); 4131 IfNode *opt_ifisnan = (IfNode*)opt_isnan; 4132 Node *iftrue = _gvn.transform(new IfTrueNode(opt_ifisnan)); 4133 4134 set_control(iftrue); 4135 4136 static const jint nan_bits = 0x7fc00000; 4137 Node *slow_result = makecon(TypeInt::make(nan_bits)); // return NaN 4138 phi->init_req(1, _gvn.transform( slow_result )); 4139 r->init_req(1, iftrue); 4140 4141 // Else fall through 4142 Node *iffalse = _gvn.transform(new IfFalseNode(opt_ifisnan)); 4143 set_control(iffalse); 4144 4145 phi->init_req(2, _gvn.transform(new MoveF2INode(arg))); 4146 r->init_req(2, iffalse); 4147 4148 // Post merge 4149 set_control(_gvn.transform(r)); 4150 record_for_igvn(r); 4151 4152 C->set_has_split_ifs(true); // Has chance for split-if optimization 4153 result = phi; 4154 assert(result->bottom_type()->isa_int(), "must be"); 4155 break; 4156 } 4157 4158 default: 4159 fatal_unexpected_iid(id); 4160 break; 4161 } 4162 set_result(_gvn.transform(result)); 4163 return true; 4164 } 4165 4166 //----------------------inline_unsafe_copyMemory------------------------- 4167 // public native void Unsafe.copyMemory0(Object srcBase, long srcOffset, Object destBase, long destOffset, long bytes); 4168 bool LibraryCallKit::inline_unsafe_copyMemory() { 4169 if (callee()->is_static()) return false; // caller must have the capability! 4170 null_check_receiver(); // null-check receiver 4171 if (stopped()) return true; 4172 4173 C->set_has_unsafe_access(true); // Mark eventual nmethod as "unsafe". 4174 4175 Node* src_ptr = argument(1); // type: oop 4176 Node* src_off = ConvL2X(argument(2)); // type: long 4177 Node* dst_ptr = argument(4); // type: oop 4178 Node* dst_off = ConvL2X(argument(5)); // type: long 4179 Node* size = ConvL2X(argument(7)); // type: long 4180 4181 assert(Unsafe_field_offset_to_byte_offset(11) == 11, 4182 "fieldOffset must be byte-scaled"); 4183 4184 src_ptr = access_resolve(src_ptr, ACCESS_READ); 4185 dst_ptr = access_resolve(dst_ptr, ACCESS_WRITE); 4186 Node* src = make_unsafe_address(src_ptr, src_off, ACCESS_READ); 4187 Node* dst = make_unsafe_address(dst_ptr, dst_off, ACCESS_WRITE); 4188 4189 // Conservatively insert a memory barrier on all memory slices. 4190 // Do not let writes of the copy source or destination float below the copy. 4191 insert_mem_bar(Op_MemBarCPUOrder); 4192 4193 Node* thread = _gvn.transform(new ThreadLocalNode()); 4194 Node* doing_unsafe_access_addr = basic_plus_adr(top(), thread, in_bytes(JavaThread::doing_unsafe_access_offset())); 4195 BasicType doing_unsafe_access_bt = T_BYTE; 4196 assert((sizeof(bool) * CHAR_BIT) == 8, "not implemented"); 4197 4198 // update volatile field 4199 store_to_memory(control(), doing_unsafe_access_addr, intcon(1), doing_unsafe_access_bt, Compile::AliasIdxRaw, MemNode::unordered); 4200 4201 // Call it. Note that the length argument is not scaled. 4202 make_runtime_call(RC_LEAF|RC_NO_FP, 4203 OptoRuntime::fast_arraycopy_Type(), 4204 StubRoutines::unsafe_arraycopy(), 4205 "unsafe_arraycopy", 4206 TypeRawPtr::BOTTOM, 4207 src, dst, size XTOP); 4208 4209 store_to_memory(control(), doing_unsafe_access_addr, intcon(0), doing_unsafe_access_bt, Compile::AliasIdxRaw, MemNode::unordered); 4210 4211 // Do not let reads of the copy destination float above the copy. 4212 insert_mem_bar(Op_MemBarCPUOrder); 4213 4214 return true; 4215 } 4216 4217 //------------------------clone_coping----------------------------------- 4218 // Helper function for inline_native_clone. 4219 void LibraryCallKit::copy_to_clone(Node* obj, Node* alloc_obj, Node* obj_size, bool is_array) { 4220 assert(obj_size != NULL, ""); 4221 Node* raw_obj = alloc_obj->in(1); 4222 assert(alloc_obj->is_CheckCastPP() && raw_obj->is_Proj() && raw_obj->in(0)->is_Allocate(), ""); 4223 4224 AllocateNode* alloc = NULL; 4225 if (ReduceBulkZeroing) { 4226 // We will be completely responsible for initializing this object - 4227 // mark Initialize node as complete. 4228 alloc = AllocateNode::Ideal_allocation(alloc_obj, &_gvn); 4229 // The object was just allocated - there should be no any stores! 4230 guarantee(alloc != NULL && alloc->maybe_set_complete(&_gvn), ""); 4231 // Mark as complete_with_arraycopy so that on AllocateNode 4232 // expansion, we know this AllocateNode is initialized by an array 4233 // copy and a StoreStore barrier exists after the array copy. 4234 alloc->initialization()->set_complete_with_arraycopy(); 4235 } 4236 4237 // Copy the fastest available way. 4238 // TODO: generate fields copies for small objects instead. 4239 Node* size = _gvn.transform(obj_size); 4240 4241 access_clone(obj, alloc_obj, size, is_array); 4242 4243 // Do not let reads from the cloned object float above the arraycopy. 4244 if (alloc != NULL) { 4245 // Do not let stores that initialize this object be reordered with 4246 // a subsequent store that would make this object accessible by 4247 // other threads. 4248 // Record what AllocateNode this StoreStore protects so that 4249 // escape analysis can go from the MemBarStoreStoreNode to the 4250 // AllocateNode and eliminate the MemBarStoreStoreNode if possible 4251 // based on the escape status of the AllocateNode. 4252 insert_mem_bar(Op_MemBarStoreStore, alloc->proj_out_or_null(AllocateNode::RawAddress)); 4253 } else { 4254 insert_mem_bar(Op_MemBarCPUOrder); 4255 } 4256 } 4257 4258 //------------------------inline_native_clone---------------------------- 4259 // protected native Object java.lang.Object.clone(); 4260 // 4261 // Here are the simple edge cases: 4262 // null receiver => normal trap 4263 // virtual and clone was overridden => slow path to out-of-line clone 4264 // not cloneable or finalizer => slow path to out-of-line Object.clone 4265 // 4266 // The general case has two steps, allocation and copying. 4267 // Allocation has two cases, and uses GraphKit::new_instance or new_array. 4268 // 4269 // Copying also has two cases, oop arrays and everything else. 4270 // Oop arrays use arrayof_oop_arraycopy (same as System.arraycopy). 4271 // Everything else uses the tight inline loop supplied by CopyArrayNode. 4272 // 4273 // These steps fold up nicely if and when the cloned object's klass 4274 // can be sharply typed as an object array, a type array, or an instance. 4275 // 4276 bool LibraryCallKit::inline_native_clone(bool is_virtual) { 4277 PhiNode* result_val; 4278 4279 // Set the reexecute bit for the interpreter to reexecute 4280 // the bytecode that invokes Object.clone if deoptimization happens. 4281 { PreserveReexecuteState preexecs(this); 4282 jvms()->set_should_reexecute(true); 4283 4284 Node* obj = null_check_receiver(); 4285 if (stopped()) return true; 4286 4287 const TypeOopPtr* obj_type = _gvn.type(obj)->is_oopptr(); 4288 4289 // If we are going to clone an instance, we need its exact type to 4290 // know the number and types of fields to convert the clone to 4291 // loads/stores. Maybe a speculative type can help us. 4292 if (!obj_type->klass_is_exact() && 4293 obj_type->speculative_type() != NULL && 4294 obj_type->speculative_type()->is_instance_klass()) { 4295 ciInstanceKlass* spec_ik = obj_type->speculative_type()->as_instance_klass(); 4296 if (spec_ik->nof_nonstatic_fields() <= ArrayCopyLoadStoreMaxElem && 4297 !spec_ik->has_injected_fields()) { 4298 ciKlass* k = obj_type->klass(); 4299 if (!k->is_instance_klass() || 4300 k->as_instance_klass()->is_interface() || 4301 k->as_instance_klass()->has_subklass()) { 4302 obj = maybe_cast_profiled_obj(obj, obj_type->speculative_type(), false); 4303 } 4304 } 4305 } 4306 4307 Node* obj_klass = load_object_klass(obj); 4308 const TypeKlassPtr* tklass = _gvn.type(obj_klass)->isa_klassptr(); 4309 const TypeOopPtr* toop = ((tklass != NULL) 4310 ? tklass->as_instance_type() 4311 : TypeInstPtr::NOTNULL); 4312 4313 // Conservatively insert a memory barrier on all memory slices. 4314 // Do not let writes into the original float below the clone. 4315 insert_mem_bar(Op_MemBarCPUOrder); 4316 4317 // paths into result_reg: 4318 enum { 4319 _slow_path = 1, // out-of-line call to clone method (virtual or not) 4320 _objArray_path, // plain array allocation, plus arrayof_oop_arraycopy 4321 _array_path, // plain array allocation, plus arrayof_long_arraycopy 4322 _instance_path, // plain instance allocation, plus arrayof_long_arraycopy 4323 PATH_LIMIT 4324 }; 4325 RegionNode* result_reg = new RegionNode(PATH_LIMIT); 4326 result_val = new PhiNode(result_reg, TypeInstPtr::NOTNULL); 4327 PhiNode* result_i_o = new PhiNode(result_reg, Type::ABIO); 4328 PhiNode* result_mem = new PhiNode(result_reg, Type::MEMORY, TypePtr::BOTTOM); 4329 record_for_igvn(result_reg); 4330 4331 Node* array_ctl = generate_array_guard(obj_klass, (RegionNode*)NULL); 4332 if (array_ctl != NULL) { 4333 // It's an array. 4334 PreserveJVMState pjvms(this); 4335 set_control(array_ctl); 4336 Node* obj_length = load_array_length(obj); 4337 Node* obj_size = NULL; 4338 Node* alloc_obj = new_array(obj_klass, obj_length, 0, &obj_size); // no arguments to push 4339 4340 BarrierSetC2* bs = BarrierSet::barrier_set()->barrier_set_c2(); 4341 if (bs->array_copy_requires_gc_barriers(true, T_OBJECT, true, BarrierSetC2::Parsing)) { 4342 // If it is an oop array, it requires very special treatment, 4343 // because gc barriers are required when accessing the array. 4344 Node* is_obja = generate_objArray_guard(obj_klass, (RegionNode*)NULL); 4345 if (is_obja != NULL) { 4346 PreserveJVMState pjvms2(this); 4347 set_control(is_obja); 4348 obj = access_resolve(obj, ACCESS_READ); 4349 // Generate a direct call to the right arraycopy function(s). 4350 Node* alloc = tightly_coupled_allocation(alloc_obj, NULL); 4351 ArrayCopyNode* ac = ArrayCopyNode::make(this, true, obj, intcon(0), alloc_obj, intcon(0), obj_length, alloc != NULL, false); 4352 ac->set_cloneoop(); 4353 Node* n = _gvn.transform(ac); 4354 assert(n == ac, "cannot disappear"); 4355 ac->connect_outputs(this); 4356 4357 result_reg->init_req(_objArray_path, control()); 4358 result_val->init_req(_objArray_path, alloc_obj); 4359 result_i_o ->set_req(_objArray_path, i_o()); 4360 result_mem ->set_req(_objArray_path, reset_memory()); 4361 } 4362 } 4363 // Otherwise, there are no barriers to worry about. 4364 // (We can dispense with card marks if we know the allocation 4365 // comes out of eden (TLAB)... In fact, ReduceInitialCardMarks 4366 // causes the non-eden paths to take compensating steps to 4367 // simulate a fresh allocation, so that no further 4368 // card marks are required in compiled code to initialize 4369 // the object.) 4370 4371 if (!stopped()) { 4372 copy_to_clone(obj, alloc_obj, obj_size, true); 4373 4374 // Present the results of the copy. 4375 result_reg->init_req(_array_path, control()); 4376 result_val->init_req(_array_path, alloc_obj); 4377 result_i_o ->set_req(_array_path, i_o()); 4378 result_mem ->set_req(_array_path, reset_memory()); 4379 } 4380 } 4381 4382 // We only go to the instance fast case code if we pass a number of guards. 4383 // The paths which do not pass are accumulated in the slow_region. 4384 RegionNode* slow_region = new RegionNode(1); 4385 record_for_igvn(slow_region); 4386 if (!stopped()) { 4387 // It's an instance (we did array above). Make the slow-path tests. 4388 // If this is a virtual call, we generate a funny guard. We grab 4389 // the vtable entry corresponding to clone() from the target object. 4390 // If the target method which we are calling happens to be the 4391 // Object clone() method, we pass the guard. We do not need this 4392 // guard for non-virtual calls; the caller is known to be the native 4393 // Object clone(). 4394 if (is_virtual) { 4395 generate_virtual_guard(obj_klass, slow_region); 4396 } 4397 4398 // The object must be easily cloneable and must not have a finalizer. 4399 // Both of these conditions may be checked in a single test. 4400 // We could optimize the test further, but we don't care. 4401 generate_access_flags_guard(obj_klass, 4402 // Test both conditions: 4403 JVM_ACC_IS_CLONEABLE_FAST | JVM_ACC_HAS_FINALIZER, 4404 // Must be cloneable but not finalizer: 4405 JVM_ACC_IS_CLONEABLE_FAST, 4406 slow_region); 4407 } 4408 4409 if (!stopped()) { 4410 // It's an instance, and it passed the slow-path tests. 4411 PreserveJVMState pjvms(this); 4412 Node* obj_size = NULL; 4413 // Need to deoptimize on exception from allocation since Object.clone intrinsic 4414 // is reexecuted if deoptimization occurs and there could be problems when merging 4415 // exception state between multiple Object.clone versions (reexecute=true vs reexecute=false). 4416 Node* alloc_obj = new_instance(obj_klass, NULL, &obj_size, /*deoptimize_on_exception=*/true); 4417 4418 copy_to_clone(obj, alloc_obj, obj_size, false); 4419 4420 // Present the results of the slow call. 4421 result_reg->init_req(_instance_path, control()); 4422 result_val->init_req(_instance_path, alloc_obj); 4423 result_i_o ->set_req(_instance_path, i_o()); 4424 result_mem ->set_req(_instance_path, reset_memory()); 4425 } 4426 4427 // Generate code for the slow case. We make a call to clone(). 4428 set_control(_gvn.transform(slow_region)); 4429 if (!stopped()) { 4430 PreserveJVMState pjvms(this); 4431 CallJavaNode* slow_call = generate_method_call(vmIntrinsics::_clone, is_virtual); 4432 // We need to deoptimize on exception (see comment above) 4433 Node* slow_result = set_results_for_java_call(slow_call, false, /* deoptimize */ true); 4434 // this->control() comes from set_results_for_java_call 4435 result_reg->init_req(_slow_path, control()); 4436 result_val->init_req(_slow_path, slow_result); 4437 result_i_o ->set_req(_slow_path, i_o()); 4438 result_mem ->set_req(_slow_path, reset_memory()); 4439 } 4440 4441 // Return the combined state. 4442 set_control( _gvn.transform(result_reg)); 4443 set_i_o( _gvn.transform(result_i_o)); 4444 set_all_memory( _gvn.transform(result_mem)); 4445 } // original reexecute is set back here 4446 4447 set_result(_gvn.transform(result_val)); 4448 return true; 4449 } 4450 4451 // If we have a tightly coupled allocation, the arraycopy may take care 4452 // of the array initialization. If one of the guards we insert between 4453 // the allocation and the arraycopy causes a deoptimization, an 4454 // unitialized array will escape the compiled method. To prevent that 4455 // we set the JVM state for uncommon traps between the allocation and 4456 // the arraycopy to the state before the allocation so, in case of 4457 // deoptimization, we'll reexecute the allocation and the 4458 // initialization. 4459 JVMState* LibraryCallKit::arraycopy_restore_alloc_state(AllocateArrayNode* alloc, int& saved_reexecute_sp) { 4460 if (alloc != NULL) { 4461 ciMethod* trap_method = alloc->jvms()->method(); 4462 int trap_bci = alloc->jvms()->bci(); 4463 4464 if (!C->too_many_traps(trap_method, trap_bci, Deoptimization::Reason_intrinsic) && 4465 !C->too_many_traps(trap_method, trap_bci, Deoptimization::Reason_null_check)) { 4466 // Make sure there's no store between the allocation and the 4467 // arraycopy otherwise visible side effects could be rexecuted 4468 // in case of deoptimization and cause incorrect execution. 4469 bool no_interfering_store = true; 4470 Node* mem = alloc->in(TypeFunc::Memory); 4471 if (mem->is_MergeMem()) { 4472 for (MergeMemStream mms(merged_memory(), mem->as_MergeMem()); mms.next_non_empty2(); ) { 4473 Node* n = mms.memory(); 4474 if (n != mms.memory2() && !(n->is_Proj() && n->in(0) == alloc->initialization())) { 4475 assert(n->is_Store(), "what else?"); 4476 no_interfering_store = false; 4477 break; 4478 } 4479 } 4480 } else { 4481 for (MergeMemStream mms(merged_memory()); mms.next_non_empty(); ) { 4482 Node* n = mms.memory(); 4483 if (n != mem && !(n->is_Proj() && n->in(0) == alloc->initialization())) { 4484 assert(n->is_Store(), "what else?"); 4485 no_interfering_store = false; 4486 break; 4487 } 4488 } 4489 } 4490 4491 if (no_interfering_store) { 4492 JVMState* old_jvms = alloc->jvms()->clone_shallow(C); 4493 uint size = alloc->req(); 4494 SafePointNode* sfpt = new SafePointNode(size, old_jvms); 4495 old_jvms->set_map(sfpt); 4496 for (uint i = 0; i < size; i++) { 4497 sfpt->init_req(i, alloc->in(i)); 4498 } 4499 // re-push array length for deoptimization 4500 sfpt->ins_req(old_jvms->stkoff() + old_jvms->sp(), alloc->in(AllocateNode::ALength)); 4501 old_jvms->set_sp(old_jvms->sp()+1); 4502 old_jvms->set_monoff(old_jvms->monoff()+1); 4503 old_jvms->set_scloff(old_jvms->scloff()+1); 4504 old_jvms->set_endoff(old_jvms->endoff()+1); 4505 old_jvms->set_should_reexecute(true); 4506 4507 sfpt->set_i_o(map()->i_o()); 4508 sfpt->set_memory(map()->memory()); 4509 sfpt->set_control(map()->control()); 4510 4511 JVMState* saved_jvms = jvms(); 4512 saved_reexecute_sp = _reexecute_sp; 4513 4514 set_jvms(sfpt->jvms()); 4515 _reexecute_sp = jvms()->sp(); 4516 4517 return saved_jvms; 4518 } 4519 } 4520 } 4521 return NULL; 4522 } 4523 4524 // In case of a deoptimization, we restart execution at the 4525 // allocation, allocating a new array. We would leave an uninitialized 4526 // array in the heap that GCs wouldn't expect. Move the allocation 4527 // after the traps so we don't allocate the array if we 4528 // deoptimize. This is possible because tightly_coupled_allocation() 4529 // guarantees there's no observer of the allocated array at this point 4530 // and the control flow is simple enough. 4531 void LibraryCallKit::arraycopy_move_allocation_here(AllocateArrayNode* alloc, Node* dest, JVMState* saved_jvms, 4532 int saved_reexecute_sp, uint new_idx) { 4533 if (saved_jvms != NULL && !stopped()) { 4534 assert(alloc != NULL, "only with a tightly coupled allocation"); 4535 // restore JVM state to the state at the arraycopy 4536 saved_jvms->map()->set_control(map()->control()); 4537 assert(saved_jvms->map()->memory() == map()->memory(), "memory state changed?"); 4538 assert(saved_jvms->map()->i_o() == map()->i_o(), "IO state changed?"); 4539 // If we've improved the types of some nodes (null check) while 4540 // emitting the guards, propagate them to the current state 4541 map()->replaced_nodes().apply(saved_jvms->map(), new_idx); 4542 set_jvms(saved_jvms); 4543 _reexecute_sp = saved_reexecute_sp; 4544 4545 // Remove the allocation from above the guards 4546 CallProjections callprojs; 4547 alloc->extract_projections(&callprojs, true); 4548 InitializeNode* init = alloc->initialization(); 4549 Node* alloc_mem = alloc->in(TypeFunc::Memory); 4550 C->gvn_replace_by(callprojs.fallthrough_ioproj, alloc->in(TypeFunc::I_O)); 4551 C->gvn_replace_by(init->proj_out(TypeFunc::Memory), alloc_mem); 4552 C->gvn_replace_by(init->proj_out(TypeFunc::Control), alloc->in(0)); 4553 4554 // move the allocation here (after the guards) 4555 _gvn.hash_delete(alloc); 4556 alloc->set_req(TypeFunc::Control, control()); 4557 alloc->set_req(TypeFunc::I_O, i_o()); 4558 Node *mem = reset_memory(); 4559 set_all_memory(mem); 4560 alloc->set_req(TypeFunc::Memory, mem); 4561 set_control(init->proj_out_or_null(TypeFunc::Control)); 4562 set_i_o(callprojs.fallthrough_ioproj); 4563 4564 // Update memory as done in GraphKit::set_output_for_allocation() 4565 const TypeInt* length_type = _gvn.find_int_type(alloc->in(AllocateNode::ALength)); 4566 const TypeOopPtr* ary_type = _gvn.type(alloc->in(AllocateNode::KlassNode))->is_klassptr()->as_instance_type(); 4567 if (ary_type->isa_aryptr() && length_type != NULL) { 4568 ary_type = ary_type->is_aryptr()->cast_to_size(length_type); 4569 } 4570 const TypePtr* telemref = ary_type->add_offset(Type::OffsetBot); 4571 int elemidx = C->get_alias_index(telemref); 4572 set_memory(init->proj_out_or_null(TypeFunc::Memory), Compile::AliasIdxRaw); 4573 set_memory(init->proj_out_or_null(TypeFunc::Memory), elemidx); 4574 4575 Node* allocx = _gvn.transform(alloc); 4576 assert(allocx == alloc, "where has the allocation gone?"); 4577 assert(dest->is_CheckCastPP(), "not an allocation result?"); 4578 4579 _gvn.hash_delete(dest); 4580 dest->set_req(0, control()); 4581 Node* destx = _gvn.transform(dest); 4582 assert(destx == dest, "where has the allocation result gone?"); 4583 } 4584 } 4585 4586 4587 //------------------------------inline_arraycopy----------------------- 4588 // public static native void java.lang.System.arraycopy(Object src, int srcPos, 4589 // Object dest, int destPos, 4590 // int length); 4591 bool LibraryCallKit::inline_arraycopy() { 4592 // Get the arguments. 4593 Node* src = argument(0); // type: oop 4594 Node* src_offset = argument(1); // type: int 4595 Node* dest = argument(2); // type: oop 4596 Node* dest_offset = argument(3); // type: int 4597 Node* length = argument(4); // type: int 4598 4599 uint new_idx = C->unique(); 4600 4601 // Check for allocation before we add nodes that would confuse 4602 // tightly_coupled_allocation() 4603 AllocateArrayNode* alloc = tightly_coupled_allocation(dest, NULL); 4604 4605 int saved_reexecute_sp = -1; 4606 JVMState* saved_jvms = arraycopy_restore_alloc_state(alloc, saved_reexecute_sp); 4607 // See arraycopy_restore_alloc_state() comment 4608 // if alloc == NULL we don't have to worry about a tightly coupled allocation so we can emit all needed guards 4609 // if saved_jvms != NULL (then alloc != NULL) then we can handle guards and a tightly coupled allocation 4610 // if saved_jvms == NULL and alloc != NULL, we can't emit any guards 4611 bool can_emit_guards = (alloc == NULL || saved_jvms != NULL); 4612 4613 // The following tests must be performed 4614 // (1) src and dest are arrays. 4615 // (2) src and dest arrays must have elements of the same BasicType 4616 // (3) src and dest must not be null. 4617 // (4) src_offset must not be negative. 4618 // (5) dest_offset must not be negative. 4619 // (6) length must not be negative. 4620 // (7) src_offset + length must not exceed length of src. 4621 // (8) dest_offset + length must not exceed length of dest. 4622 // (9) each element of an oop array must be assignable 4623 4624 // (3) src and dest must not be null. 4625 // always do this here because we need the JVM state for uncommon traps 4626 Node* null_ctl = top(); 4627 src = saved_jvms != NULL ? null_check_oop(src, &null_ctl, true, true) : null_check(src, T_ARRAY); 4628 assert(null_ctl->is_top(), "no null control here"); 4629 dest = null_check(dest, T_ARRAY); 4630 4631 if (!can_emit_guards) { 4632 // if saved_jvms == NULL and alloc != NULL, we don't emit any 4633 // guards but the arraycopy node could still take advantage of a 4634 // tightly allocated allocation. tightly_coupled_allocation() is 4635 // called again to make sure it takes the null check above into 4636 // account: the null check is mandatory and if it caused an 4637 // uncommon trap to be emitted then the allocation can't be 4638 // considered tightly coupled in this context. 4639 alloc = tightly_coupled_allocation(dest, NULL); 4640 } 4641 4642 bool validated = false; 4643 4644 const Type* src_type = _gvn.type(src); 4645 const Type* dest_type = _gvn.type(dest); 4646 const TypeAryPtr* top_src = src_type->isa_aryptr(); 4647 const TypeAryPtr* top_dest = dest_type->isa_aryptr(); 4648 4649 // Do we have the type of src? 4650 bool has_src = (top_src != NULL && top_src->klass() != NULL); 4651 // Do we have the type of dest? 4652 bool has_dest = (top_dest != NULL && top_dest->klass() != NULL); 4653 // Is the type for src from speculation? 4654 bool src_spec = false; 4655 // Is the type for dest from speculation? 4656 bool dest_spec = false; 4657 4658 if ((!has_src || !has_dest) && can_emit_guards) { 4659 // We don't have sufficient type information, let's see if 4660 // speculative types can help. We need to have types for both src 4661 // and dest so that it pays off. 4662 4663 // Do we already have or could we have type information for src 4664 bool could_have_src = has_src; 4665 // Do we already have or could we have type information for dest 4666 bool could_have_dest = has_dest; 4667 4668 ciKlass* src_k = NULL; 4669 if (!has_src) { 4670 src_k = src_type->speculative_type_not_null(); 4671 if (src_k != NULL && src_k->is_array_klass()) { 4672 could_have_src = true; 4673 } 4674 } 4675 4676 ciKlass* dest_k = NULL; 4677 if (!has_dest) { 4678 dest_k = dest_type->speculative_type_not_null(); 4679 if (dest_k != NULL && dest_k->is_array_klass()) { 4680 could_have_dest = true; 4681 } 4682 } 4683 4684 if (could_have_src && could_have_dest) { 4685 // This is going to pay off so emit the required guards 4686 if (!has_src) { 4687 src = maybe_cast_profiled_obj(src, src_k, true); 4688 src_type = _gvn.type(src); 4689 top_src = src_type->isa_aryptr(); 4690 has_src = (top_src != NULL && top_src->klass() != NULL); 4691 src_spec = true; 4692 } 4693 if (!has_dest) { 4694 dest = maybe_cast_profiled_obj(dest, dest_k, true); 4695 dest_type = _gvn.type(dest); 4696 top_dest = dest_type->isa_aryptr(); 4697 has_dest = (top_dest != NULL && top_dest->klass() != NULL); 4698 dest_spec = true; 4699 } 4700 } 4701 } 4702 4703 if (has_src && has_dest && can_emit_guards) { 4704 BasicType src_elem = top_src->klass()->as_array_klass()->element_type()->basic_type(); 4705 BasicType dest_elem = top_dest->klass()->as_array_klass()->element_type()->basic_type(); 4706 if (is_reference_type(src_elem)) src_elem = T_OBJECT; 4707 if (is_reference_type(dest_elem)) dest_elem = T_OBJECT; 4708 4709 if (src_elem == dest_elem && src_elem == T_OBJECT) { 4710 // If both arrays are object arrays then having the exact types 4711 // for both will remove the need for a subtype check at runtime 4712 // before the call and may make it possible to pick a faster copy 4713 // routine (without a subtype check on every element) 4714 // Do we have the exact type of src? 4715 bool could_have_src = src_spec; 4716 // Do we have the exact type of dest? 4717 bool could_have_dest = dest_spec; 4718 ciKlass* src_k = top_src->klass(); 4719 ciKlass* dest_k = top_dest->klass(); 4720 if (!src_spec) { 4721 src_k = src_type->speculative_type_not_null(); 4722 if (src_k != NULL && src_k->is_array_klass()) { 4723 could_have_src = true; 4724 } 4725 } 4726 if (!dest_spec) { 4727 dest_k = dest_type->speculative_type_not_null(); 4728 if (dest_k != NULL && dest_k->is_array_klass()) { 4729 could_have_dest = true; 4730 } 4731 } 4732 if (could_have_src && could_have_dest) { 4733 // If we can have both exact types, emit the missing guards 4734 if (could_have_src && !src_spec) { 4735 src = maybe_cast_profiled_obj(src, src_k, true); 4736 } 4737 if (could_have_dest && !dest_spec) { 4738 dest = maybe_cast_profiled_obj(dest, dest_k, true); 4739 } 4740 } 4741 } 4742 } 4743 4744 ciMethod* trap_method = method(); 4745 int trap_bci = bci(); 4746 if (saved_jvms != NULL) { 4747 trap_method = alloc->jvms()->method(); 4748 trap_bci = alloc->jvms()->bci(); 4749 } 4750 4751 bool negative_length_guard_generated = false; 4752 4753 if (!C->too_many_traps(trap_method, trap_bci, Deoptimization::Reason_intrinsic) && 4754 can_emit_guards && 4755 !src->is_top() && !dest->is_top()) { 4756 // validate arguments: enables transformation the ArrayCopyNode 4757 validated = true; 4758 4759 RegionNode* slow_region = new RegionNode(1); 4760 record_for_igvn(slow_region); 4761 4762 // (1) src and dest are arrays. 4763 generate_non_array_guard(load_object_klass(src), slow_region); 4764 generate_non_array_guard(load_object_klass(dest), slow_region); 4765 4766 // (2) src and dest arrays must have elements of the same BasicType 4767 // done at macro expansion or at Ideal transformation time 4768 4769 // (4) src_offset must not be negative. 4770 generate_negative_guard(src_offset, slow_region); 4771 4772 // (5) dest_offset must not be negative. 4773 generate_negative_guard(dest_offset, slow_region); 4774 4775 // (7) src_offset + length must not exceed length of src. 4776 generate_limit_guard(src_offset, length, 4777 load_array_length(src), 4778 slow_region); 4779 4780 // (8) dest_offset + length must not exceed length of dest. 4781 generate_limit_guard(dest_offset, length, 4782 load_array_length(dest), 4783 slow_region); 4784 4785 // (6) length must not be negative. 4786 // This is also checked in generate_arraycopy() during macro expansion, but 4787 // we also have to check it here for the case where the ArrayCopyNode will 4788 // be eliminated by Escape Analysis. 4789 if (EliminateAllocations) { 4790 generate_negative_guard(length, slow_region); 4791 negative_length_guard_generated = true; 4792 } 4793 4794 // (9) each element of an oop array must be assignable 4795 Node* src_klass = load_object_klass(src); 4796 Node* dest_klass = load_object_klass(dest); 4797 Node* not_subtype_ctrl = gen_subtype_check(src_klass, dest_klass); 4798 4799 if (not_subtype_ctrl != top()) { 4800 PreserveJVMState pjvms(this); 4801 set_control(not_subtype_ctrl); 4802 uncommon_trap(Deoptimization::Reason_intrinsic, 4803 Deoptimization::Action_make_not_entrant); 4804 assert(stopped(), "Should be stopped"); 4805 } 4806 { 4807 PreserveJVMState pjvms(this); 4808 set_control(_gvn.transform(slow_region)); 4809 uncommon_trap(Deoptimization::Reason_intrinsic, 4810 Deoptimization::Action_make_not_entrant); 4811 assert(stopped(), "Should be stopped"); 4812 } 4813 4814 const TypeKlassPtr* dest_klass_t = _gvn.type(dest_klass)->is_klassptr(); 4815 const Type *toop = TypeOopPtr::make_from_klass(dest_klass_t->klass()); 4816 src = _gvn.transform(new CheckCastPPNode(control(), src, toop)); 4817 } 4818 4819 arraycopy_move_allocation_here(alloc, dest, saved_jvms, saved_reexecute_sp, new_idx); 4820 4821 if (stopped()) { 4822 return true; 4823 } 4824 4825 Node* new_src = access_resolve(src, ACCESS_READ); 4826 Node* new_dest = access_resolve(dest, ACCESS_WRITE); 4827 4828 ArrayCopyNode* ac = ArrayCopyNode::make(this, true, new_src, src_offset, new_dest, dest_offset, length, alloc != NULL, negative_length_guard_generated, 4829 // Create LoadRange and LoadKlass nodes for use during macro expansion here 4830 // so the compiler has a chance to eliminate them: during macro expansion, 4831 // we have to set their control (CastPP nodes are eliminated). 4832 load_object_klass(src), load_object_klass(dest), 4833 load_array_length(src), load_array_length(dest)); 4834 4835 ac->set_arraycopy(validated); 4836 4837 Node* n = _gvn.transform(ac); 4838 if (n == ac) { 4839 ac->connect_outputs(this); 4840 } else { 4841 assert(validated, "shouldn't transform if all arguments not validated"); 4842 set_all_memory(n); 4843 } 4844 clear_upper_avx(); 4845 4846 4847 return true; 4848 } 4849 4850 4851 // Helper function which determines if an arraycopy immediately follows 4852 // an allocation, with no intervening tests or other escapes for the object. 4853 AllocateArrayNode* 4854 LibraryCallKit::tightly_coupled_allocation(Node* ptr, 4855 RegionNode* slow_region) { 4856 if (stopped()) return NULL; // no fast path 4857 if (C->AliasLevel() == 0) return NULL; // no MergeMems around 4858 4859 AllocateArrayNode* alloc = AllocateArrayNode::Ideal_array_allocation(ptr, &_gvn); 4860 if (alloc == NULL) return NULL; 4861 4862 Node* rawmem = memory(Compile::AliasIdxRaw); 4863 // Is the allocation's memory state untouched? 4864 if (!(rawmem->is_Proj() && rawmem->in(0)->is_Initialize())) { 4865 // Bail out if there have been raw-memory effects since the allocation. 4866 // (Example: There might have been a call or safepoint.) 4867 return NULL; 4868 } 4869 rawmem = rawmem->in(0)->as_Initialize()->memory(Compile::AliasIdxRaw); 4870 if (!(rawmem->is_Proj() && rawmem->in(0) == alloc)) { 4871 return NULL; 4872 } 4873 4874 // There must be no unexpected observers of this allocation. 4875 for (DUIterator_Fast imax, i = ptr->fast_outs(imax); i < imax; i++) { 4876 Node* obs = ptr->fast_out(i); 4877 if (obs != this->map()) { 4878 return NULL; 4879 } 4880 } 4881 4882 // This arraycopy must unconditionally follow the allocation of the ptr. 4883 Node* alloc_ctl = ptr->in(0); 4884 assert(just_allocated_object(alloc_ctl) == ptr, "most recent allo"); 4885 4886 Node* ctl = control(); 4887 while (ctl != alloc_ctl) { 4888 // There may be guards which feed into the slow_region. 4889 // Any other control flow means that we might not get a chance 4890 // to finish initializing the allocated object. 4891 if ((ctl->is_IfFalse() || ctl->is_IfTrue()) && ctl->in(0)->is_If()) { 4892 IfNode* iff = ctl->in(0)->as_If(); 4893 Node* not_ctl = iff->proj_out_or_null(1 - ctl->as_Proj()->_con); 4894 assert(not_ctl != NULL && not_ctl != ctl, "found alternate"); 4895 if (slow_region != NULL && slow_region->find_edge(not_ctl) >= 1) { 4896 ctl = iff->in(0); // This test feeds the known slow_region. 4897 continue; 4898 } 4899 // One more try: Various low-level checks bottom out in 4900 // uncommon traps. If the debug-info of the trap omits 4901 // any reference to the allocation, as we've already 4902 // observed, then there can be no objection to the trap. 4903 bool found_trap = false; 4904 for (DUIterator_Fast jmax, j = not_ctl->fast_outs(jmax); j < jmax; j++) { 4905 Node* obs = not_ctl->fast_out(j); 4906 if (obs->in(0) == not_ctl && obs->is_Call() && 4907 (obs->as_Call()->entry_point() == SharedRuntime::uncommon_trap_blob()->entry_point())) { 4908 found_trap = true; break; 4909 } 4910 } 4911 if (found_trap) { 4912 ctl = iff->in(0); // This test feeds a harmless uncommon trap. 4913 continue; 4914 } 4915 } 4916 return NULL; 4917 } 4918 4919 // If we get this far, we have an allocation which immediately 4920 // precedes the arraycopy, and we can take over zeroing the new object. 4921 // The arraycopy will finish the initialization, and provide 4922 // a new control state to which we will anchor the destination pointer. 4923 4924 return alloc; 4925 } 4926 4927 //-------------inline_encodeISOArray----------------------------------- 4928 // encode char[] to byte[] in ISO_8859_1 4929 bool LibraryCallKit::inline_encodeISOArray() { 4930 assert(callee()->signature()->size() == 5, "encodeISOArray has 5 parameters"); 4931 // no receiver since it is static method 4932 Node *src = argument(0); 4933 Node *src_offset = argument(1); 4934 Node *dst = argument(2); 4935 Node *dst_offset = argument(3); 4936 Node *length = argument(4); 4937 4938 src = must_be_not_null(src, true); 4939 dst = must_be_not_null(dst, true); 4940 4941 src = access_resolve(src, ACCESS_READ); 4942 dst = access_resolve(dst, ACCESS_WRITE); 4943 4944 const Type* src_type = src->Value(&_gvn); 4945 const Type* dst_type = dst->Value(&_gvn); 4946 const TypeAryPtr* top_src = src_type->isa_aryptr(); 4947 const TypeAryPtr* top_dest = dst_type->isa_aryptr(); 4948 if (top_src == NULL || top_src->klass() == NULL || 4949 top_dest == NULL || top_dest->klass() == NULL) { 4950 // failed array check 4951 return false; 4952 } 4953 4954 // Figure out the size and type of the elements we will be copying. 4955 BasicType src_elem = src_type->isa_aryptr()->klass()->as_array_klass()->element_type()->basic_type(); 4956 BasicType dst_elem = dst_type->isa_aryptr()->klass()->as_array_klass()->element_type()->basic_type(); 4957 if (!((src_elem == T_CHAR) || (src_elem== T_BYTE)) || dst_elem != T_BYTE) { 4958 return false; 4959 } 4960 4961 Node* src_start = array_element_address(src, src_offset, T_CHAR); 4962 Node* dst_start = array_element_address(dst, dst_offset, dst_elem); 4963 // 'src_start' points to src array + scaled offset 4964 // 'dst_start' points to dst array + scaled offset 4965 4966 const TypeAryPtr* mtype = TypeAryPtr::BYTES; 4967 Node* enc = new EncodeISOArrayNode(control(), memory(mtype), src_start, dst_start, length); 4968 enc = _gvn.transform(enc); 4969 Node* res_mem = _gvn.transform(new SCMemProjNode(enc)); 4970 set_memory(res_mem, mtype); 4971 set_result(enc); 4972 clear_upper_avx(); 4973 4974 return true; 4975 } 4976 4977 //-------------inline_multiplyToLen----------------------------------- 4978 bool LibraryCallKit::inline_multiplyToLen() { 4979 assert(UseMultiplyToLenIntrinsic, "not implemented on this platform"); 4980 4981 address stubAddr = StubRoutines::multiplyToLen(); 4982 if (stubAddr == NULL) { 4983 return false; // Intrinsic's stub is not implemented on this platform 4984 } 4985 const char* stubName = "multiplyToLen"; 4986 4987 assert(callee()->signature()->size() == 5, "multiplyToLen has 5 parameters"); 4988 4989 // no receiver because it is a static method 4990 Node* x = argument(0); 4991 Node* xlen = argument(1); 4992 Node* y = argument(2); 4993 Node* ylen = argument(3); 4994 Node* z = argument(4); 4995 4996 x = must_be_not_null(x, true); 4997 y = must_be_not_null(y, true); 4998 4999 x = access_resolve(x, ACCESS_READ); 5000 y = access_resolve(y, ACCESS_READ); 5001 z = access_resolve(z, ACCESS_WRITE); 5002 5003 const Type* x_type = x->Value(&_gvn); 5004 const Type* y_type = y->Value(&_gvn); 5005 const TypeAryPtr* top_x = x_type->isa_aryptr(); 5006 const TypeAryPtr* top_y = y_type->isa_aryptr(); 5007 if (top_x == NULL || top_x->klass() == NULL || 5008 top_y == NULL || top_y->klass() == NULL) { 5009 // failed array check 5010 return false; 5011 } 5012 5013 BasicType x_elem = x_type->isa_aryptr()->klass()->as_array_klass()->element_type()->basic_type(); 5014 BasicType y_elem = y_type->isa_aryptr()->klass()->as_array_klass()->element_type()->basic_type(); 5015 if (x_elem != T_INT || y_elem != T_INT) { 5016 return false; 5017 } 5018 5019 // Set the original stack and the reexecute bit for the interpreter to reexecute 5020 // the bytecode that invokes BigInteger.multiplyToLen() if deoptimization happens 5021 // on the return from z array allocation in runtime. 5022 { PreserveReexecuteState preexecs(this); 5023 jvms()->set_should_reexecute(true); 5024 5025 Node* x_start = array_element_address(x, intcon(0), x_elem); 5026 Node* y_start = array_element_address(y, intcon(0), y_elem); 5027 // 'x_start' points to x array + scaled xlen 5028 // 'y_start' points to y array + scaled ylen 5029 5030 // Allocate the result array 5031 Node* zlen = _gvn.transform(new AddINode(xlen, ylen)); 5032 ciKlass* klass = ciTypeArrayKlass::make(T_INT); 5033 Node* klass_node = makecon(TypeKlassPtr::make(klass)); 5034 5035 IdealKit ideal(this); 5036 5037 #define __ ideal. 5038 Node* one = __ ConI(1); 5039 Node* zero = __ ConI(0); 5040 IdealVariable need_alloc(ideal), z_alloc(ideal); __ declarations_done(); 5041 __ set(need_alloc, zero); 5042 __ set(z_alloc, z); 5043 __ if_then(z, BoolTest::eq, null()); { 5044 __ increment (need_alloc, one); 5045 } __ else_(); { 5046 // Update graphKit memory and control from IdealKit. 5047 sync_kit(ideal); 5048 Node *cast = new CastPPNode(z, TypePtr::NOTNULL); 5049 cast->init_req(0, control()); 5050 _gvn.set_type(cast, cast->bottom_type()); 5051 C->record_for_igvn(cast); 5052 5053 Node* zlen_arg = load_array_length(cast); 5054 // Update IdealKit memory and control from graphKit. 5055 __ sync_kit(this); 5056 __ if_then(zlen_arg, BoolTest::lt, zlen); { 5057 __ increment (need_alloc, one); 5058 } __ end_if(); 5059 } __ end_if(); 5060 5061 __ if_then(__ value(need_alloc), BoolTest::ne, zero); { 5062 // Update graphKit memory and control from IdealKit. 5063 sync_kit(ideal); 5064 Node * narr = new_array(klass_node, zlen, 1); 5065 // Update IdealKit memory and control from graphKit. 5066 __ sync_kit(this); 5067 __ set(z_alloc, narr); 5068 } __ end_if(); 5069 5070 sync_kit(ideal); 5071 z = __ value(z_alloc); 5072 // Can't use TypeAryPtr::INTS which uses Bottom offset. 5073 _gvn.set_type(z, TypeOopPtr::make_from_klass(klass)); 5074 // Final sync IdealKit and GraphKit. 5075 final_sync(ideal); 5076 #undef __ 5077 5078 Node* z_start = array_element_address(z, intcon(0), T_INT); 5079 5080 Node* call = make_runtime_call(RC_LEAF|RC_NO_FP, 5081 OptoRuntime::multiplyToLen_Type(), 5082 stubAddr, stubName, TypePtr::BOTTOM, 5083 x_start, xlen, y_start, ylen, z_start, zlen); 5084 } // original reexecute is set back here 5085 5086 C->set_has_split_ifs(true); // Has chance for split-if optimization 5087 set_result(z); 5088 return true; 5089 } 5090 5091 //-------------inline_squareToLen------------------------------------ 5092 bool LibraryCallKit::inline_squareToLen() { 5093 assert(UseSquareToLenIntrinsic, "not implemented on this platform"); 5094 5095 address stubAddr = StubRoutines::squareToLen(); 5096 if (stubAddr == NULL) { 5097 return false; // Intrinsic's stub is not implemented on this platform 5098 } 5099 const char* stubName = "squareToLen"; 5100 5101 assert(callee()->signature()->size() == 4, "implSquareToLen has 4 parameters"); 5102 5103 Node* x = argument(0); 5104 Node* len = argument(1); 5105 Node* z = argument(2); 5106 Node* zlen = argument(3); 5107 5108 x = must_be_not_null(x, true); 5109 z = must_be_not_null(z, true); 5110 5111 x = access_resolve(x, ACCESS_READ); 5112 z = access_resolve(z, ACCESS_WRITE); 5113 5114 const Type* x_type = x->Value(&_gvn); 5115 const Type* z_type = z->Value(&_gvn); 5116 const TypeAryPtr* top_x = x_type->isa_aryptr(); 5117 const TypeAryPtr* top_z = z_type->isa_aryptr(); 5118 if (top_x == NULL || top_x->klass() == NULL || 5119 top_z == NULL || top_z->klass() == NULL) { 5120 // failed array check 5121 return false; 5122 } 5123 5124 BasicType x_elem = x_type->isa_aryptr()->klass()->as_array_klass()->element_type()->basic_type(); 5125 BasicType z_elem = z_type->isa_aryptr()->klass()->as_array_klass()->element_type()->basic_type(); 5126 if (x_elem != T_INT || z_elem != T_INT) { 5127 return false; 5128 } 5129 5130 5131 Node* x_start = array_element_address(x, intcon(0), x_elem); 5132 Node* z_start = array_element_address(z, intcon(0), z_elem); 5133 5134 Node* call = make_runtime_call(RC_LEAF|RC_NO_FP, 5135 OptoRuntime::squareToLen_Type(), 5136 stubAddr, stubName, TypePtr::BOTTOM, 5137 x_start, len, z_start, zlen); 5138 5139 set_result(z); 5140 return true; 5141 } 5142 5143 //-------------inline_mulAdd------------------------------------------ 5144 bool LibraryCallKit::inline_mulAdd() { 5145 assert(UseMulAddIntrinsic, "not implemented on this platform"); 5146 5147 address stubAddr = StubRoutines::mulAdd(); 5148 if (stubAddr == NULL) { 5149 return false; // Intrinsic's stub is not implemented on this platform 5150 } 5151 const char* stubName = "mulAdd"; 5152 5153 assert(callee()->signature()->size() == 5, "mulAdd has 5 parameters"); 5154 5155 Node* out = argument(0); 5156 Node* in = argument(1); 5157 Node* offset = argument(2); 5158 Node* len = argument(3); 5159 Node* k = argument(4); 5160 5161 out = must_be_not_null(out, true); 5162 5163 in = access_resolve(in, ACCESS_READ); 5164 out = access_resolve(out, ACCESS_WRITE); 5165 5166 const Type* out_type = out->Value(&_gvn); 5167 const Type* in_type = in->Value(&_gvn); 5168 const TypeAryPtr* top_out = out_type->isa_aryptr(); 5169 const TypeAryPtr* top_in = in_type->isa_aryptr(); 5170 if (top_out == NULL || top_out->klass() == NULL || 5171 top_in == NULL || top_in->klass() == NULL) { 5172 // failed array check 5173 return false; 5174 } 5175 5176 BasicType out_elem = out_type->isa_aryptr()->klass()->as_array_klass()->element_type()->basic_type(); 5177 BasicType in_elem = in_type->isa_aryptr()->klass()->as_array_klass()->element_type()->basic_type(); 5178 if (out_elem != T_INT || in_elem != T_INT) { 5179 return false; 5180 } 5181 5182 Node* outlen = load_array_length(out); 5183 Node* new_offset = _gvn.transform(new SubINode(outlen, offset)); 5184 Node* out_start = array_element_address(out, intcon(0), out_elem); 5185 Node* in_start = array_element_address(in, intcon(0), in_elem); 5186 5187 Node* call = make_runtime_call(RC_LEAF|RC_NO_FP, 5188 OptoRuntime::mulAdd_Type(), 5189 stubAddr, stubName, TypePtr::BOTTOM, 5190 out_start,in_start, new_offset, len, k); 5191 Node* result = _gvn.transform(new ProjNode(call, TypeFunc::Parms)); 5192 set_result(result); 5193 return true; 5194 } 5195 5196 //-------------inline_montgomeryMultiply----------------------------------- 5197 bool LibraryCallKit::inline_montgomeryMultiply() { 5198 address stubAddr = StubRoutines::montgomeryMultiply(); 5199 if (stubAddr == NULL) { 5200 return false; // Intrinsic's stub is not implemented on this platform 5201 } 5202 5203 assert(UseMontgomeryMultiplyIntrinsic, "not implemented on this platform"); 5204 const char* stubName = "montgomery_multiply"; 5205 5206 assert(callee()->signature()->size() == 7, "montgomeryMultiply has 7 parameters"); 5207 5208 Node* a = argument(0); 5209 Node* b = argument(1); 5210 Node* n = argument(2); 5211 Node* len = argument(3); 5212 Node* inv = argument(4); 5213 Node* m = argument(6); 5214 5215 a = access_resolve(a, ACCESS_READ); 5216 b = access_resolve(b, ACCESS_READ); 5217 n = access_resolve(n, ACCESS_READ); 5218 m = access_resolve(m, ACCESS_WRITE); 5219 5220 const Type* a_type = a->Value(&_gvn); 5221 const TypeAryPtr* top_a = a_type->isa_aryptr(); 5222 const Type* b_type = b->Value(&_gvn); 5223 const TypeAryPtr* top_b = b_type->isa_aryptr(); 5224 const Type* n_type = a->Value(&_gvn); 5225 const TypeAryPtr* top_n = n_type->isa_aryptr(); 5226 const Type* m_type = a->Value(&_gvn); 5227 const TypeAryPtr* top_m = m_type->isa_aryptr(); 5228 if (top_a == NULL || top_a->klass() == NULL || 5229 top_b == NULL || top_b->klass() == NULL || 5230 top_n == NULL || top_n->klass() == NULL || 5231 top_m == NULL || top_m->klass() == NULL) { 5232 // failed array check 5233 return false; 5234 } 5235 5236 BasicType a_elem = a_type->isa_aryptr()->klass()->as_array_klass()->element_type()->basic_type(); 5237 BasicType b_elem = b_type->isa_aryptr()->klass()->as_array_klass()->element_type()->basic_type(); 5238 BasicType n_elem = n_type->isa_aryptr()->klass()->as_array_klass()->element_type()->basic_type(); 5239 BasicType m_elem = m_type->isa_aryptr()->klass()->as_array_klass()->element_type()->basic_type(); 5240 if (a_elem != T_INT || b_elem != T_INT || n_elem != T_INT || m_elem != T_INT) { 5241 return false; 5242 } 5243 5244 // Make the call 5245 { 5246 Node* a_start = array_element_address(a, intcon(0), a_elem); 5247 Node* b_start = array_element_address(b, intcon(0), b_elem); 5248 Node* n_start = array_element_address(n, intcon(0), n_elem); 5249 Node* m_start = array_element_address(m, intcon(0), m_elem); 5250 5251 Node* call = make_runtime_call(RC_LEAF, 5252 OptoRuntime::montgomeryMultiply_Type(), 5253 stubAddr, stubName, TypePtr::BOTTOM, 5254 a_start, b_start, n_start, len, inv, top(), 5255 m_start); 5256 set_result(m); 5257 } 5258 5259 return true; 5260 } 5261 5262 bool LibraryCallKit::inline_montgomerySquare() { 5263 address stubAddr = StubRoutines::montgomerySquare(); 5264 if (stubAddr == NULL) { 5265 return false; // Intrinsic's stub is not implemented on this platform 5266 } 5267 5268 assert(UseMontgomerySquareIntrinsic, "not implemented on this platform"); 5269 const char* stubName = "montgomery_square"; 5270 5271 assert(callee()->signature()->size() == 6, "montgomerySquare has 6 parameters"); 5272 5273 Node* a = argument(0); 5274 Node* n = argument(1); 5275 Node* len = argument(2); 5276 Node* inv = argument(3); 5277 Node* m = argument(5); 5278 5279 a = access_resolve(a, ACCESS_READ); 5280 n = access_resolve(n, ACCESS_READ); 5281 m = access_resolve(m, ACCESS_WRITE); 5282 5283 const Type* a_type = a->Value(&_gvn); 5284 const TypeAryPtr* top_a = a_type->isa_aryptr(); 5285 const Type* n_type = a->Value(&_gvn); 5286 const TypeAryPtr* top_n = n_type->isa_aryptr(); 5287 const Type* m_type = a->Value(&_gvn); 5288 const TypeAryPtr* top_m = m_type->isa_aryptr(); 5289 if (top_a == NULL || top_a->klass() == NULL || 5290 top_n == NULL || top_n->klass() == NULL || 5291 top_m == NULL || top_m->klass() == NULL) { 5292 // failed array check 5293 return false; 5294 } 5295 5296 BasicType a_elem = a_type->isa_aryptr()->klass()->as_array_klass()->element_type()->basic_type(); 5297 BasicType n_elem = n_type->isa_aryptr()->klass()->as_array_klass()->element_type()->basic_type(); 5298 BasicType m_elem = m_type->isa_aryptr()->klass()->as_array_klass()->element_type()->basic_type(); 5299 if (a_elem != T_INT || n_elem != T_INT || m_elem != T_INT) { 5300 return false; 5301 } 5302 5303 // Make the call 5304 { 5305 Node* a_start = array_element_address(a, intcon(0), a_elem); 5306 Node* n_start = array_element_address(n, intcon(0), n_elem); 5307 Node* m_start = array_element_address(m, intcon(0), m_elem); 5308 5309 Node* call = make_runtime_call(RC_LEAF, 5310 OptoRuntime::montgomerySquare_Type(), 5311 stubAddr, stubName, TypePtr::BOTTOM, 5312 a_start, n_start, len, inv, top(), 5313 m_start); 5314 set_result(m); 5315 } 5316 5317 return true; 5318 } 5319 5320 //-------------inline_vectorizedMismatch------------------------------ 5321 bool LibraryCallKit::inline_vectorizedMismatch() { 5322 assert(UseVectorizedMismatchIntrinsic, "not implementated on this platform"); 5323 5324 address stubAddr = StubRoutines::vectorizedMismatch(); 5325 if (stubAddr == NULL) { 5326 return false; // Intrinsic's stub is not implemented on this platform 5327 } 5328 const char* stubName = "vectorizedMismatch"; 5329 int size_l = callee()->signature()->size(); 5330 assert(callee()->signature()->size() == 8, "vectorizedMismatch has 6 parameters"); 5331 5332 Node* obja = argument(0); 5333 Node* aoffset = argument(1); 5334 Node* objb = argument(3); 5335 Node* boffset = argument(4); 5336 Node* length = argument(6); 5337 Node* scale = argument(7); 5338 5339 const Type* a_type = obja->Value(&_gvn); 5340 const Type* b_type = objb->Value(&_gvn); 5341 const TypeAryPtr* top_a = a_type->isa_aryptr(); 5342 const TypeAryPtr* top_b = b_type->isa_aryptr(); 5343 if (top_a == NULL || top_a->klass() == NULL || 5344 top_b == NULL || top_b->klass() == NULL) { 5345 // failed array check 5346 return false; 5347 } 5348 5349 Node* call; 5350 jvms()->set_should_reexecute(true); 5351 5352 obja = access_resolve(obja, ACCESS_READ); 5353 objb = access_resolve(objb, ACCESS_READ); 5354 Node* obja_adr = make_unsafe_address(obja, aoffset, ACCESS_READ); 5355 Node* objb_adr = make_unsafe_address(objb, boffset, ACCESS_READ); 5356 5357 call = make_runtime_call(RC_LEAF, 5358 OptoRuntime::vectorizedMismatch_Type(), 5359 stubAddr, stubName, TypePtr::BOTTOM, 5360 obja_adr, objb_adr, length, scale); 5361 5362 Node* result = _gvn.transform(new ProjNode(call, TypeFunc::Parms)); 5363 set_result(result); 5364 return true; 5365 } 5366 5367 /** 5368 * Calculate CRC32 for byte. 5369 * int java.util.zip.CRC32.update(int crc, int b) 5370 */ 5371 bool LibraryCallKit::inline_updateCRC32() { 5372 assert(UseCRC32Intrinsics, "need AVX and LCMUL instructions support"); 5373 assert(callee()->signature()->size() == 2, "update has 2 parameters"); 5374 // no receiver since it is static method 5375 Node* crc = argument(0); // type: int 5376 Node* b = argument(1); // type: int 5377 5378 /* 5379 * int c = ~ crc; 5380 * b = timesXtoThe32[(b ^ c) & 0xFF]; 5381 * b = b ^ (c >>> 8); 5382 * crc = ~b; 5383 */ 5384 5385 Node* M1 = intcon(-1); 5386 crc = _gvn.transform(new XorINode(crc, M1)); 5387 Node* result = _gvn.transform(new XorINode(crc, b)); 5388 result = _gvn.transform(new AndINode(result, intcon(0xFF))); 5389 5390 Node* base = makecon(TypeRawPtr::make(StubRoutines::crc_table_addr())); 5391 Node* offset = _gvn.transform(new LShiftINode(result, intcon(0x2))); 5392 Node* adr = basic_plus_adr(top(), base, ConvI2X(offset)); 5393 result = make_load(control(), adr, TypeInt::INT, T_INT, MemNode::unordered); 5394 5395 crc = _gvn.transform(new URShiftINode(crc, intcon(8))); 5396 result = _gvn.transform(new XorINode(crc, result)); 5397 result = _gvn.transform(new XorINode(result, M1)); 5398 set_result(result); 5399 return true; 5400 } 5401 5402 /** 5403 * Calculate CRC32 for byte[] array. 5404 * int java.util.zip.CRC32.updateBytes(int crc, byte[] buf, int off, int len) 5405 */ 5406 bool LibraryCallKit::inline_updateBytesCRC32() { 5407 assert(UseCRC32Intrinsics, "need AVX and LCMUL instructions support"); 5408 assert(callee()->signature()->size() == 4, "updateBytes has 4 parameters"); 5409 // no receiver since it is static method 5410 Node* crc = argument(0); // type: int 5411 Node* src = argument(1); // type: oop 5412 Node* offset = argument(2); // type: int 5413 Node* length = argument(3); // type: int 5414 5415 const Type* src_type = src->Value(&_gvn); 5416 const TypeAryPtr* top_src = src_type->isa_aryptr(); 5417 if (top_src == NULL || top_src->klass() == NULL) { 5418 // failed array check 5419 return false; 5420 } 5421 5422 // Figure out the size and type of the elements we will be copying. 5423 BasicType src_elem = src_type->isa_aryptr()->klass()->as_array_klass()->element_type()->basic_type(); 5424 if (src_elem != T_BYTE) { 5425 return false; 5426 } 5427 5428 // 'src_start' points to src array + scaled offset 5429 src = must_be_not_null(src, true); 5430 src = access_resolve(src, ACCESS_READ); 5431 Node* src_start = array_element_address(src, offset, src_elem); 5432 5433 // We assume that range check is done by caller. 5434 // TODO: generate range check (offset+length < src.length) in debug VM. 5435 5436 // Call the stub. 5437 address stubAddr = StubRoutines::updateBytesCRC32(); 5438 const char *stubName = "updateBytesCRC32"; 5439 5440 Node* call = make_runtime_call(RC_LEAF|RC_NO_FP, OptoRuntime::updateBytesCRC32_Type(), 5441 stubAddr, stubName, TypePtr::BOTTOM, 5442 crc, src_start, length); 5443 Node* result = _gvn.transform(new ProjNode(call, TypeFunc::Parms)); 5444 set_result(result); 5445 return true; 5446 } 5447 5448 /** 5449 * Calculate CRC32 for ByteBuffer. 5450 * int java.util.zip.CRC32.updateByteBuffer(int crc, long buf, int off, int len) 5451 */ 5452 bool LibraryCallKit::inline_updateByteBufferCRC32() { 5453 assert(UseCRC32Intrinsics, "need AVX and LCMUL instructions support"); 5454 assert(callee()->signature()->size() == 5, "updateByteBuffer has 4 parameters and one is long"); 5455 // no receiver since it is static method 5456 Node* crc = argument(0); // type: int 5457 Node* src = argument(1); // type: long 5458 Node* offset = argument(3); // type: int 5459 Node* length = argument(4); // type: int 5460 5461 src = ConvL2X(src); // adjust Java long to machine word 5462 Node* base = _gvn.transform(new CastX2PNode(src)); 5463 offset = ConvI2X(offset); 5464 5465 // 'src_start' points to src array + scaled offset 5466 Node* src_start = basic_plus_adr(top(), base, offset); 5467 5468 // Call the stub. 5469 address stubAddr = StubRoutines::updateBytesCRC32(); 5470 const char *stubName = "updateBytesCRC32"; 5471 5472 Node* call = make_runtime_call(RC_LEAF|RC_NO_FP, OptoRuntime::updateBytesCRC32_Type(), 5473 stubAddr, stubName, TypePtr::BOTTOM, 5474 crc, src_start, length); 5475 Node* result = _gvn.transform(new ProjNode(call, TypeFunc::Parms)); 5476 set_result(result); 5477 return true; 5478 } 5479 5480 //------------------------------get_table_from_crc32c_class----------------------- 5481 Node * LibraryCallKit::get_table_from_crc32c_class(ciInstanceKlass *crc32c_class) { 5482 Node* table = load_field_from_object(NULL, "byteTable", "[I", /*is_exact*/ false, /*is_static*/ true, crc32c_class); 5483 assert (table != NULL, "wrong version of java.util.zip.CRC32C"); 5484 5485 return table; 5486 } 5487 5488 //------------------------------inline_updateBytesCRC32C----------------------- 5489 // 5490 // Calculate CRC32C for byte[] array. 5491 // int java.util.zip.CRC32C.updateBytes(int crc, byte[] buf, int off, int end) 5492 // 5493 bool LibraryCallKit::inline_updateBytesCRC32C() { 5494 assert(UseCRC32CIntrinsics, "need CRC32C instruction support"); 5495 assert(callee()->signature()->size() == 4, "updateBytes has 4 parameters"); 5496 assert(callee()->holder()->is_loaded(), "CRC32C class must be loaded"); 5497 // no receiver since it is a static method 5498 Node* crc = argument(0); // type: int 5499 Node* src = argument(1); // type: oop 5500 Node* offset = argument(2); // type: int 5501 Node* end = argument(3); // type: int 5502 5503 Node* length = _gvn.transform(new SubINode(end, offset)); 5504 5505 const Type* src_type = src->Value(&_gvn); 5506 const TypeAryPtr* top_src = src_type->isa_aryptr(); 5507 if (top_src == NULL || top_src->klass() == NULL) { 5508 // failed array check 5509 return false; 5510 } 5511 5512 // Figure out the size and type of the elements we will be copying. 5513 BasicType src_elem = src_type->isa_aryptr()->klass()->as_array_klass()->element_type()->basic_type(); 5514 if (src_elem != T_BYTE) { 5515 return false; 5516 } 5517 5518 // 'src_start' points to src array + scaled offset 5519 src = must_be_not_null(src, true); 5520 src = access_resolve(src, ACCESS_READ); 5521 Node* src_start = array_element_address(src, offset, src_elem); 5522 5523 // static final int[] byteTable in class CRC32C 5524 Node* table = get_table_from_crc32c_class(callee()->holder()); 5525 table = must_be_not_null(table, true); 5526 table = access_resolve(table, ACCESS_READ); 5527 Node* table_start = array_element_address(table, intcon(0), T_INT); 5528 5529 // We assume that range check is done by caller. 5530 // TODO: generate range check (offset+length < src.length) in debug VM. 5531 5532 // Call the stub. 5533 address stubAddr = StubRoutines::updateBytesCRC32C(); 5534 const char *stubName = "updateBytesCRC32C"; 5535 5536 Node* call = make_runtime_call(RC_LEAF, OptoRuntime::updateBytesCRC32C_Type(), 5537 stubAddr, stubName, TypePtr::BOTTOM, 5538 crc, src_start, length, table_start); 5539 Node* result = _gvn.transform(new ProjNode(call, TypeFunc::Parms)); 5540 set_result(result); 5541 return true; 5542 } 5543 5544 //------------------------------inline_updateDirectByteBufferCRC32C----------------------- 5545 // 5546 // Calculate CRC32C for DirectByteBuffer. 5547 // int java.util.zip.CRC32C.updateDirectByteBuffer(int crc, long buf, int off, int end) 5548 // 5549 bool LibraryCallKit::inline_updateDirectByteBufferCRC32C() { 5550 assert(UseCRC32CIntrinsics, "need CRC32C instruction support"); 5551 assert(callee()->signature()->size() == 5, "updateDirectByteBuffer has 4 parameters and one is long"); 5552 assert(callee()->holder()->is_loaded(), "CRC32C class must be loaded"); 5553 // no receiver since it is a static method 5554 Node* crc = argument(0); // type: int 5555 Node* src = argument(1); // type: long 5556 Node* offset = argument(3); // type: int 5557 Node* end = argument(4); // type: int 5558 5559 Node* length = _gvn.transform(new SubINode(end, offset)); 5560 5561 src = ConvL2X(src); // adjust Java long to machine word 5562 Node* base = _gvn.transform(new CastX2PNode(src)); 5563 offset = ConvI2X(offset); 5564 5565 // 'src_start' points to src array + scaled offset 5566 Node* src_start = basic_plus_adr(top(), base, offset); 5567 5568 // static final int[] byteTable in class CRC32C 5569 Node* table = get_table_from_crc32c_class(callee()->holder()); 5570 table = must_be_not_null(table, true); 5571 table = access_resolve(table, ACCESS_READ); 5572 Node* table_start = array_element_address(table, intcon(0), T_INT); 5573 5574 // Call the stub. 5575 address stubAddr = StubRoutines::updateBytesCRC32C(); 5576 const char *stubName = "updateBytesCRC32C"; 5577 5578 Node* call = make_runtime_call(RC_LEAF, OptoRuntime::updateBytesCRC32C_Type(), 5579 stubAddr, stubName, TypePtr::BOTTOM, 5580 crc, src_start, length, table_start); 5581 Node* result = _gvn.transform(new ProjNode(call, TypeFunc::Parms)); 5582 set_result(result); 5583 return true; 5584 } 5585 5586 //------------------------------inline_updateBytesAdler32---------------------- 5587 // 5588 // Calculate Adler32 checksum for byte[] array. 5589 // int java.util.zip.Adler32.updateBytes(int crc, byte[] buf, int off, int len) 5590 // 5591 bool LibraryCallKit::inline_updateBytesAdler32() { 5592 assert(UseAdler32Intrinsics, "Adler32 Instrinsic support need"); // check if we actually need to check this flag or check a different one 5593 assert(callee()->signature()->size() == 4, "updateBytes has 4 parameters"); 5594 assert(callee()->holder()->is_loaded(), "Adler32 class must be loaded"); 5595 // no receiver since it is static method 5596 Node* crc = argument(0); // type: int 5597 Node* src = argument(1); // type: oop 5598 Node* offset = argument(2); // type: int 5599 Node* length = argument(3); // type: int 5600 5601 const Type* src_type = src->Value(&_gvn); 5602 const TypeAryPtr* top_src = src_type->isa_aryptr(); 5603 if (top_src == NULL || top_src->klass() == NULL) { 5604 // failed array check 5605 return false; 5606 } 5607 5608 // Figure out the size and type of the elements we will be copying. 5609 BasicType src_elem = src_type->isa_aryptr()->klass()->as_array_klass()->element_type()->basic_type(); 5610 if (src_elem != T_BYTE) { 5611 return false; 5612 } 5613 5614 // 'src_start' points to src array + scaled offset 5615 src = access_resolve(src, ACCESS_READ); 5616 Node* src_start = array_element_address(src, offset, src_elem); 5617 5618 // We assume that range check is done by caller. 5619 // TODO: generate range check (offset+length < src.length) in debug VM. 5620 5621 // Call the stub. 5622 address stubAddr = StubRoutines::updateBytesAdler32(); 5623 const char *stubName = "updateBytesAdler32"; 5624 5625 Node* call = make_runtime_call(RC_LEAF, OptoRuntime::updateBytesAdler32_Type(), 5626 stubAddr, stubName, TypePtr::BOTTOM, 5627 crc, src_start, length); 5628 Node* result = _gvn.transform(new ProjNode(call, TypeFunc::Parms)); 5629 set_result(result); 5630 return true; 5631 } 5632 5633 //------------------------------inline_updateByteBufferAdler32--------------- 5634 // 5635 // Calculate Adler32 checksum for DirectByteBuffer. 5636 // int java.util.zip.Adler32.updateByteBuffer(int crc, long buf, int off, int len) 5637 // 5638 bool LibraryCallKit::inline_updateByteBufferAdler32() { 5639 assert(UseAdler32Intrinsics, "Adler32 Instrinsic support need"); // check if we actually need to check this flag or check a different one 5640 assert(callee()->signature()->size() == 5, "updateByteBuffer has 4 parameters and one is long"); 5641 assert(callee()->holder()->is_loaded(), "Adler32 class must be loaded"); 5642 // no receiver since it is static method 5643 Node* crc = argument(0); // type: int 5644 Node* src = argument(1); // type: long 5645 Node* offset = argument(3); // type: int 5646 Node* length = argument(4); // type: int 5647 5648 src = ConvL2X(src); // adjust Java long to machine word 5649 Node* base = _gvn.transform(new CastX2PNode(src)); 5650 offset = ConvI2X(offset); 5651 5652 // 'src_start' points to src array + scaled offset 5653 Node* src_start = basic_plus_adr(top(), base, offset); 5654 5655 // Call the stub. 5656 address stubAddr = StubRoutines::updateBytesAdler32(); 5657 const char *stubName = "updateBytesAdler32"; 5658 5659 Node* call = make_runtime_call(RC_LEAF, OptoRuntime::updateBytesAdler32_Type(), 5660 stubAddr, stubName, TypePtr::BOTTOM, 5661 crc, src_start, length); 5662 5663 Node* result = _gvn.transform(new ProjNode(call, TypeFunc::Parms)); 5664 set_result(result); 5665 return true; 5666 } 5667 5668 //----------------------------inline_reference_get---------------------------- 5669 // public T java.lang.ref.Reference.get(); 5670 bool LibraryCallKit::inline_reference_get() { 5671 const int referent_offset = java_lang_ref_Reference::referent_offset; 5672 guarantee(referent_offset > 0, "should have already been set"); 5673 5674 // Get the argument: 5675 Node* reference_obj = null_check_receiver(); 5676 if (stopped()) return true; 5677 5678 const TypeInstPtr* tinst = _gvn.type(reference_obj)->isa_instptr(); 5679 assert(tinst != NULL, "obj is null"); 5680 assert(tinst->klass()->is_loaded(), "obj is not loaded"); 5681 ciInstanceKlass* referenceKlass = tinst->klass()->as_instance_klass(); 5682 ciField* field = referenceKlass->get_field_by_name(ciSymbol::make("referent"), 5683 ciSymbol::make("Ljava/lang/Object;"), 5684 false); 5685 assert (field != NULL, "undefined field"); 5686 5687 Node* adr = basic_plus_adr(reference_obj, reference_obj, referent_offset); 5688 const TypePtr* adr_type = C->alias_type(field)->adr_type(); 5689 5690 ciInstanceKlass* klass = env()->Object_klass(); 5691 const TypeOopPtr* object_type = TypeOopPtr::make_from_klass(klass); 5692 5693 DecoratorSet decorators = IN_HEAP | ON_WEAK_OOP_REF; 5694 Node* result = access_load_at(reference_obj, adr, adr_type, object_type, T_OBJECT, decorators); 5695 // Add memory barrier to prevent commoning reads from this field 5696 // across safepoint since GC can change its value. 5697 insert_mem_bar(Op_MemBarCPUOrder); 5698 5699 set_result(result); 5700 return true; 5701 } 5702 5703 5704 Node * LibraryCallKit::load_field_from_object(Node * fromObj, const char * fieldName, const char * fieldTypeString, 5705 bool is_exact=true, bool is_static=false, 5706 ciInstanceKlass * fromKls=NULL) { 5707 if (fromKls == NULL) { 5708 const TypeInstPtr* tinst = _gvn.type(fromObj)->isa_instptr(); 5709 assert(tinst != NULL, "obj is null"); 5710 assert(tinst->klass()->is_loaded(), "obj is not loaded"); 5711 assert(!is_exact || tinst->klass_is_exact(), "klass not exact"); 5712 fromKls = tinst->klass()->as_instance_klass(); 5713 } else { 5714 assert(is_static, "only for static field access"); 5715 } 5716 ciField* field = fromKls->get_field_by_name(ciSymbol::make(fieldName), 5717 ciSymbol::make(fieldTypeString), 5718 is_static); 5719 5720 assert (field != NULL, "undefined field"); 5721 if (field == NULL) return (Node *) NULL; 5722 5723 if (is_static) { 5724 const TypeInstPtr* tip = TypeInstPtr::make(fromKls->java_mirror()); 5725 fromObj = makecon(tip); 5726 } 5727 5728 // Next code copied from Parse::do_get_xxx(): 5729 5730 // Compute address and memory type. 5731 int offset = field->offset_in_bytes(); 5732 bool is_vol = field->is_volatile(); 5733 ciType* field_klass = field->type(); 5734 assert(field_klass->is_loaded(), "should be loaded"); 5735 const TypePtr* adr_type = C->alias_type(field)->adr_type(); 5736 Node *adr = basic_plus_adr(fromObj, fromObj, offset); 5737 BasicType bt = field->layout_type(); 5738 5739 // Build the resultant type of the load 5740 const Type *type; 5741 if (bt == T_OBJECT) { 5742 type = TypeOopPtr::make_from_klass(field_klass->as_klass()); 5743 } else { 5744 type = Type::get_const_basic_type(bt); 5745 } 5746 5747 DecoratorSet decorators = IN_HEAP; 5748 5749 if (is_vol) { 5750 decorators |= MO_SEQ_CST; 5751 } 5752 5753 return access_load_at(fromObj, adr, adr_type, type, bt, decorators); 5754 } 5755 5756 Node * LibraryCallKit::field_address_from_object(Node * fromObj, const char * fieldName, const char * fieldTypeString, 5757 bool is_exact = true, bool is_static = false, 5758 ciInstanceKlass * fromKls = NULL) { 5759 if (fromKls == NULL) { 5760 const TypeInstPtr* tinst = _gvn.type(fromObj)->isa_instptr(); 5761 assert(tinst != NULL, "obj is null"); 5762 assert(tinst->klass()->is_loaded(), "obj is not loaded"); 5763 assert(!is_exact || tinst->klass_is_exact(), "klass not exact"); 5764 fromKls = tinst->klass()->as_instance_klass(); 5765 } 5766 else { 5767 assert(is_static, "only for static field access"); 5768 } 5769 ciField* field = fromKls->get_field_by_name(ciSymbol::make(fieldName), 5770 ciSymbol::make(fieldTypeString), 5771 is_static); 5772 5773 assert(field != NULL, "undefined field"); 5774 assert(!field->is_volatile(), "not defined for volatile fields"); 5775 5776 if (is_static) { 5777 const TypeInstPtr* tip = TypeInstPtr::make(fromKls->java_mirror()); 5778 fromObj = makecon(tip); 5779 } 5780 5781 // Next code copied from Parse::do_get_xxx(): 5782 5783 // Compute address and memory type. 5784 int offset = field->offset_in_bytes(); 5785 Node *adr = basic_plus_adr(fromObj, fromObj, offset); 5786 5787 return adr; 5788 } 5789 5790 //------------------------------inline_aescrypt_Block----------------------- 5791 bool LibraryCallKit::inline_aescrypt_Block(vmIntrinsics::ID id) { 5792 address stubAddr = NULL; 5793 const char *stubName; 5794 assert(UseAES, "need AES instruction support"); 5795 5796 switch(id) { 5797 case vmIntrinsics::_aescrypt_encryptBlock: 5798 stubAddr = StubRoutines::aescrypt_encryptBlock(); 5799 stubName = "aescrypt_encryptBlock"; 5800 break; 5801 case vmIntrinsics::_aescrypt_decryptBlock: 5802 stubAddr = StubRoutines::aescrypt_decryptBlock(); 5803 stubName = "aescrypt_decryptBlock"; 5804 break; 5805 default: 5806 break; 5807 } 5808 if (stubAddr == NULL) return false; 5809 5810 Node* aescrypt_object = argument(0); 5811 Node* src = argument(1); 5812 Node* src_offset = argument(2); 5813 Node* dest = argument(3); 5814 Node* dest_offset = argument(4); 5815 5816 src = must_be_not_null(src, true); 5817 dest = must_be_not_null(dest, true); 5818 5819 src = access_resolve(src, ACCESS_READ); 5820 dest = access_resolve(dest, ACCESS_WRITE); 5821 5822 // (1) src and dest are arrays. 5823 const Type* src_type = src->Value(&_gvn); 5824 const Type* dest_type = dest->Value(&_gvn); 5825 const TypeAryPtr* top_src = src_type->isa_aryptr(); 5826 const TypeAryPtr* top_dest = dest_type->isa_aryptr(); 5827 assert (top_src != NULL && top_src->klass() != NULL && top_dest != NULL && top_dest->klass() != NULL, "args are strange"); 5828 5829 // for the quick and dirty code we will skip all the checks. 5830 // we are just trying to get the call to be generated. 5831 Node* src_start = src; 5832 Node* dest_start = dest; 5833 if (src_offset != NULL || dest_offset != NULL) { 5834 assert(src_offset != NULL && dest_offset != NULL, ""); 5835 src_start = array_element_address(src, src_offset, T_BYTE); 5836 dest_start = array_element_address(dest, dest_offset, T_BYTE); 5837 } 5838 5839 // now need to get the start of its expanded key array 5840 // this requires a newer class file that has this array as littleEndian ints, otherwise we revert to java 5841 Node* k_start = get_key_start_from_aescrypt_object(aescrypt_object); 5842 if (k_start == NULL) return false; 5843 5844 if (Matcher::pass_original_key_for_aes()) { 5845 // on SPARC we need to pass the original key since key expansion needs to happen in intrinsics due to 5846 // compatibility issues between Java key expansion and SPARC crypto instructions 5847 Node* original_k_start = get_original_key_start_from_aescrypt_object(aescrypt_object); 5848 if (original_k_start == NULL) return false; 5849 5850 // Call the stub. 5851 make_runtime_call(RC_LEAF|RC_NO_FP, OptoRuntime::aescrypt_block_Type(), 5852 stubAddr, stubName, TypePtr::BOTTOM, 5853 src_start, dest_start, k_start, original_k_start); 5854 } else { 5855 // Call the stub. 5856 make_runtime_call(RC_LEAF|RC_NO_FP, OptoRuntime::aescrypt_block_Type(), 5857 stubAddr, stubName, TypePtr::BOTTOM, 5858 src_start, dest_start, k_start); 5859 } 5860 5861 return true; 5862 } 5863 5864 //------------------------------inline_cipherBlockChaining_AESCrypt----------------------- 5865 bool LibraryCallKit::inline_cipherBlockChaining_AESCrypt(vmIntrinsics::ID id) { 5866 address stubAddr = NULL; 5867 const char *stubName = NULL; 5868 5869 assert(UseAES, "need AES instruction support"); 5870 5871 switch(id) { 5872 case vmIntrinsics::_cipherBlockChaining_encryptAESCrypt: 5873 stubAddr = StubRoutines::cipherBlockChaining_encryptAESCrypt(); 5874 stubName = "cipherBlockChaining_encryptAESCrypt"; 5875 break; 5876 case vmIntrinsics::_cipherBlockChaining_decryptAESCrypt: 5877 stubAddr = StubRoutines::cipherBlockChaining_decryptAESCrypt(); 5878 stubName = "cipherBlockChaining_decryptAESCrypt"; 5879 break; 5880 default: 5881 break; 5882 } 5883 if (stubAddr == NULL) return false; 5884 5885 Node* cipherBlockChaining_object = argument(0); 5886 Node* src = argument(1); 5887 Node* src_offset = argument(2); 5888 Node* len = argument(3); 5889 Node* dest = argument(4); 5890 Node* dest_offset = argument(5); 5891 5892 src = must_be_not_null(src, false); 5893 dest = must_be_not_null(dest, false); 5894 5895 src = access_resolve(src, ACCESS_READ); 5896 dest = access_resolve(dest, ACCESS_WRITE); 5897 5898 // (1) src and dest are arrays. 5899 const Type* src_type = src->Value(&_gvn); 5900 const Type* dest_type = dest->Value(&_gvn); 5901 const TypeAryPtr* top_src = src_type->isa_aryptr(); 5902 const TypeAryPtr* top_dest = dest_type->isa_aryptr(); 5903 assert (top_src != NULL && top_src->klass() != NULL 5904 && top_dest != NULL && top_dest->klass() != NULL, "args are strange"); 5905 5906 // checks are the responsibility of the caller 5907 Node* src_start = src; 5908 Node* dest_start = dest; 5909 if (src_offset != NULL || dest_offset != NULL) { 5910 assert(src_offset != NULL && dest_offset != NULL, ""); 5911 src_start = array_element_address(src, src_offset, T_BYTE); 5912 dest_start = array_element_address(dest, dest_offset, T_BYTE); 5913 } 5914 5915 // if we are in this set of code, we "know" the embeddedCipher is an AESCrypt object 5916 // (because of the predicated logic executed earlier). 5917 // so we cast it here safely. 5918 // this requires a newer class file that has this array as littleEndian ints, otherwise we revert to java 5919 5920 Node* embeddedCipherObj = load_field_from_object(cipherBlockChaining_object, "embeddedCipher", "Lcom/sun/crypto/provider/SymmetricCipher;", /*is_exact*/ false); 5921 if (embeddedCipherObj == NULL) return false; 5922 5923 // cast it to what we know it will be at runtime 5924 const TypeInstPtr* tinst = _gvn.type(cipherBlockChaining_object)->isa_instptr(); 5925 assert(tinst != NULL, "CBC obj is null"); 5926 assert(tinst->klass()->is_loaded(), "CBC obj is not loaded"); 5927 ciKlass* klass_AESCrypt = tinst->klass()->as_instance_klass()->find_klass(ciSymbol::make("com/sun/crypto/provider/AESCrypt")); 5928 assert(klass_AESCrypt->is_loaded(), "predicate checks that this class is loaded"); 5929 5930 ciInstanceKlass* instklass_AESCrypt = klass_AESCrypt->as_instance_klass(); 5931 const TypeKlassPtr* aklass = TypeKlassPtr::make(instklass_AESCrypt); 5932 const TypeOopPtr* xtype = aklass->as_instance_type(); 5933 Node* aescrypt_object = new CheckCastPPNode(control(), embeddedCipherObj, xtype); 5934 aescrypt_object = _gvn.transform(aescrypt_object); 5935 5936 // we need to get the start of the aescrypt_object's expanded key array 5937 Node* k_start = get_key_start_from_aescrypt_object(aescrypt_object); 5938 if (k_start == NULL) return false; 5939 5940 // similarly, get the start address of the r vector 5941 Node* objRvec = load_field_from_object(cipherBlockChaining_object, "r", "[B", /*is_exact*/ false); 5942 if (objRvec == NULL) return false; 5943 objRvec = access_resolve(objRvec, ACCESS_WRITE); 5944 Node* r_start = array_element_address(objRvec, intcon(0), T_BYTE); 5945 5946 Node* cbcCrypt; 5947 if (Matcher::pass_original_key_for_aes()) { 5948 // on SPARC we need to pass the original key since key expansion needs to happen in intrinsics due to 5949 // compatibility issues between Java key expansion and SPARC crypto instructions 5950 Node* original_k_start = get_original_key_start_from_aescrypt_object(aescrypt_object); 5951 if (original_k_start == NULL) return false; 5952 5953 // Call the stub, passing src_start, dest_start, k_start, r_start, src_len and original_k_start 5954 cbcCrypt = make_runtime_call(RC_LEAF|RC_NO_FP, 5955 OptoRuntime::cipherBlockChaining_aescrypt_Type(), 5956 stubAddr, stubName, TypePtr::BOTTOM, 5957 src_start, dest_start, k_start, r_start, len, original_k_start); 5958 } else { 5959 // Call the stub, passing src_start, dest_start, k_start, r_start and src_len 5960 cbcCrypt = make_runtime_call(RC_LEAF|RC_NO_FP, 5961 OptoRuntime::cipherBlockChaining_aescrypt_Type(), 5962 stubAddr, stubName, TypePtr::BOTTOM, 5963 src_start, dest_start, k_start, r_start, len); 5964 } 5965 5966 // return cipher length (int) 5967 Node* retvalue = _gvn.transform(new ProjNode(cbcCrypt, TypeFunc::Parms)); 5968 set_result(retvalue); 5969 return true; 5970 } 5971 5972 //------------------------------inline_electronicCodeBook_AESCrypt----------------------- 5973 bool LibraryCallKit::inline_electronicCodeBook_AESCrypt(vmIntrinsics::ID id) { 5974 address stubAddr = NULL; 5975 const char *stubName = NULL; 5976 5977 assert(UseAES, "need AES instruction support"); 5978 5979 switch (id) { 5980 case vmIntrinsics::_electronicCodeBook_encryptAESCrypt: 5981 stubAddr = StubRoutines::electronicCodeBook_encryptAESCrypt(); 5982 stubName = "electronicCodeBook_encryptAESCrypt"; 5983 break; 5984 case vmIntrinsics::_electronicCodeBook_decryptAESCrypt: 5985 stubAddr = StubRoutines::electronicCodeBook_decryptAESCrypt(); 5986 stubName = "electronicCodeBook_decryptAESCrypt"; 5987 break; 5988 default: 5989 break; 5990 } 5991 5992 if (stubAddr == NULL) return false; 5993 5994 Node* electronicCodeBook_object = argument(0); 5995 Node* src = argument(1); 5996 Node* src_offset = argument(2); 5997 Node* len = argument(3); 5998 Node* dest = argument(4); 5999 Node* dest_offset = argument(5); 6000 6001 // (1) src and dest are arrays. 6002 const Type* src_type = src->Value(&_gvn); 6003 const Type* dest_type = dest->Value(&_gvn); 6004 const TypeAryPtr* top_src = src_type->isa_aryptr(); 6005 const TypeAryPtr* top_dest = dest_type->isa_aryptr(); 6006 assert(top_src != NULL && top_src->klass() != NULL 6007 && top_dest != NULL && top_dest->klass() != NULL, "args are strange"); 6008 6009 // checks are the responsibility of the caller 6010 Node* src_start = src; 6011 Node* dest_start = dest; 6012 if (src_offset != NULL || dest_offset != NULL) { 6013 assert(src_offset != NULL && dest_offset != NULL, ""); 6014 src_start = array_element_address(src, src_offset, T_BYTE); 6015 dest_start = array_element_address(dest, dest_offset, T_BYTE); 6016 } 6017 6018 // if we are in this set of code, we "know" the embeddedCipher is an AESCrypt object 6019 // (because of the predicated logic executed earlier). 6020 // so we cast it here safely. 6021 // this requires a newer class file that has this array as littleEndian ints, otherwise we revert to java 6022 6023 Node* embeddedCipherObj = load_field_from_object(electronicCodeBook_object, "embeddedCipher", "Lcom/sun/crypto/provider/SymmetricCipher;", /*is_exact*/ false); 6024 if (embeddedCipherObj == NULL) return false; 6025 6026 // cast it to what we know it will be at runtime 6027 const TypeInstPtr* tinst = _gvn.type(electronicCodeBook_object)->isa_instptr(); 6028 assert(tinst != NULL, "ECB obj is null"); 6029 assert(tinst->klass()->is_loaded(), "ECB obj is not loaded"); 6030 ciKlass* klass_AESCrypt = tinst->klass()->as_instance_klass()->find_klass(ciSymbol::make("com/sun/crypto/provider/AESCrypt")); 6031 assert(klass_AESCrypt->is_loaded(), "predicate checks that this class is loaded"); 6032 6033 ciInstanceKlass* instklass_AESCrypt = klass_AESCrypt->as_instance_klass(); 6034 const TypeKlassPtr* aklass = TypeKlassPtr::make(instklass_AESCrypt); 6035 const TypeOopPtr* xtype = aklass->as_instance_type(); 6036 Node* aescrypt_object = new CheckCastPPNode(control(), embeddedCipherObj, xtype); 6037 aescrypt_object = _gvn.transform(aescrypt_object); 6038 6039 // we need to get the start of the aescrypt_object's expanded key array 6040 Node* k_start = get_key_start_from_aescrypt_object(aescrypt_object); 6041 if (k_start == NULL) return false; 6042 6043 Node* ecbCrypt; 6044 if (Matcher::pass_original_key_for_aes()) { 6045 // no SPARC version for AES/ECB intrinsics now. 6046 return false; 6047 } 6048 // Call the stub, passing src_start, dest_start, k_start, r_start and src_len 6049 ecbCrypt = make_runtime_call(RC_LEAF | RC_NO_FP, 6050 OptoRuntime::electronicCodeBook_aescrypt_Type(), 6051 stubAddr, stubName, TypePtr::BOTTOM, 6052 src_start, dest_start, k_start, len); 6053 6054 // return cipher length (int) 6055 Node* retvalue = _gvn.transform(new ProjNode(ecbCrypt, TypeFunc::Parms)); 6056 set_result(retvalue); 6057 return true; 6058 } 6059 6060 //------------------------------inline_counterMode_AESCrypt----------------------- 6061 bool LibraryCallKit::inline_counterMode_AESCrypt(vmIntrinsics::ID id) { 6062 assert(UseAES, "need AES instruction support"); 6063 if (!UseAESCTRIntrinsics) return false; 6064 6065 address stubAddr = NULL; 6066 const char *stubName = NULL; 6067 if (id == vmIntrinsics::_counterMode_AESCrypt) { 6068 stubAddr = StubRoutines::counterMode_AESCrypt(); 6069 stubName = "counterMode_AESCrypt"; 6070 } 6071 if (stubAddr == NULL) return false; 6072 6073 Node* counterMode_object = argument(0); 6074 Node* src = argument(1); 6075 Node* src_offset = argument(2); 6076 Node* len = argument(3); 6077 Node* dest = argument(4); 6078 Node* dest_offset = argument(5); 6079 6080 src = access_resolve(src, ACCESS_READ); 6081 dest = access_resolve(dest, ACCESS_WRITE); 6082 counterMode_object = access_resolve(counterMode_object, ACCESS_WRITE); 6083 6084 // (1) src and dest are arrays. 6085 const Type* src_type = src->Value(&_gvn); 6086 const Type* dest_type = dest->Value(&_gvn); 6087 const TypeAryPtr* top_src = src_type->isa_aryptr(); 6088 const TypeAryPtr* top_dest = dest_type->isa_aryptr(); 6089 assert(top_src != NULL && top_src->klass() != NULL && 6090 top_dest != NULL && top_dest->klass() != NULL, "args are strange"); 6091 6092 // checks are the responsibility of the caller 6093 Node* src_start = src; 6094 Node* dest_start = dest; 6095 if (src_offset != NULL || dest_offset != NULL) { 6096 assert(src_offset != NULL && dest_offset != NULL, ""); 6097 src_start = array_element_address(src, src_offset, T_BYTE); 6098 dest_start = array_element_address(dest, dest_offset, T_BYTE); 6099 } 6100 6101 // if we are in this set of code, we "know" the embeddedCipher is an AESCrypt object 6102 // (because of the predicated logic executed earlier). 6103 // so we cast it here safely. 6104 // this requires a newer class file that has this array as littleEndian ints, otherwise we revert to java 6105 Node* embeddedCipherObj = load_field_from_object(counterMode_object, "embeddedCipher", "Lcom/sun/crypto/provider/SymmetricCipher;", /*is_exact*/ false); 6106 if (embeddedCipherObj == NULL) return false; 6107 // cast it to what we know it will be at runtime 6108 const TypeInstPtr* tinst = _gvn.type(counterMode_object)->isa_instptr(); 6109 assert(tinst != NULL, "CTR obj is null"); 6110 assert(tinst->klass()->is_loaded(), "CTR obj is not loaded"); 6111 ciKlass* klass_AESCrypt = tinst->klass()->as_instance_klass()->find_klass(ciSymbol::make("com/sun/crypto/provider/AESCrypt")); 6112 assert(klass_AESCrypt->is_loaded(), "predicate checks that this class is loaded"); 6113 ciInstanceKlass* instklass_AESCrypt = klass_AESCrypt->as_instance_klass(); 6114 const TypeKlassPtr* aklass = TypeKlassPtr::make(instklass_AESCrypt); 6115 const TypeOopPtr* xtype = aklass->as_instance_type(); 6116 Node* aescrypt_object = new CheckCastPPNode(control(), embeddedCipherObj, xtype); 6117 aescrypt_object = _gvn.transform(aescrypt_object); 6118 // we need to get the start of the aescrypt_object's expanded key array 6119 Node* k_start = get_key_start_from_aescrypt_object(aescrypt_object); 6120 if (k_start == NULL) return false; 6121 // similarly, get the start address of the r vector 6122 Node* obj_counter = load_field_from_object(counterMode_object, "counter", "[B", /*is_exact*/ false); 6123 if (obj_counter == NULL) return false; 6124 obj_counter = access_resolve(obj_counter, ACCESS_WRITE); 6125 Node* cnt_start = array_element_address(obj_counter, intcon(0), T_BYTE); 6126 6127 Node* saved_encCounter = load_field_from_object(counterMode_object, "encryptedCounter", "[B", /*is_exact*/ false); 6128 if (saved_encCounter == NULL) return false; 6129 saved_encCounter = access_resolve(saved_encCounter, ACCESS_WRITE); 6130 Node* saved_encCounter_start = array_element_address(saved_encCounter, intcon(0), T_BYTE); 6131 Node* used = field_address_from_object(counterMode_object, "used", "I", /*is_exact*/ false); 6132 6133 Node* ctrCrypt; 6134 if (Matcher::pass_original_key_for_aes()) { 6135 // no SPARC version for AES/CTR intrinsics now. 6136 return false; 6137 } 6138 // Call the stub, passing src_start, dest_start, k_start, r_start and src_len 6139 ctrCrypt = make_runtime_call(RC_LEAF|RC_NO_FP, 6140 OptoRuntime::counterMode_aescrypt_Type(), 6141 stubAddr, stubName, TypePtr::BOTTOM, 6142 src_start, dest_start, k_start, cnt_start, len, saved_encCounter_start, used); 6143 6144 // return cipher length (int) 6145 Node* retvalue = _gvn.transform(new ProjNode(ctrCrypt, TypeFunc::Parms)); 6146 set_result(retvalue); 6147 return true; 6148 } 6149 6150 //------------------------------get_key_start_from_aescrypt_object----------------------- 6151 Node * LibraryCallKit::get_key_start_from_aescrypt_object(Node *aescrypt_object) { 6152 #if defined(PPC64) || defined(S390) 6153 // MixColumns for decryption can be reduced by preprocessing MixColumns with round keys. 6154 // Intel's extention is based on this optimization and AESCrypt generates round keys by preprocessing MixColumns. 6155 // However, ppc64 vncipher processes MixColumns and requires the same round keys with encryption. 6156 // The ppc64 stubs of encryption and decryption use the same round keys (sessionK[0]). 6157 Node* objSessionK = load_field_from_object(aescrypt_object, "sessionK", "[[I", /*is_exact*/ false); 6158 assert (objSessionK != NULL, "wrong version of com.sun.crypto.provider.AESCrypt"); 6159 if (objSessionK == NULL) { 6160 return (Node *) NULL; 6161 } 6162 Node* objAESCryptKey = load_array_element(control(), objSessionK, intcon(0), TypeAryPtr::OOPS); 6163 #else 6164 Node* objAESCryptKey = load_field_from_object(aescrypt_object, "K", "[I", /*is_exact*/ false); 6165 #endif // PPC64 6166 assert (objAESCryptKey != NULL, "wrong version of com.sun.crypto.provider.AESCrypt"); 6167 if (objAESCryptKey == NULL) return (Node *) NULL; 6168 6169 // now have the array, need to get the start address of the K array 6170 objAESCryptKey = access_resolve(objAESCryptKey, ACCESS_READ); 6171 Node* k_start = array_element_address(objAESCryptKey, intcon(0), T_INT); 6172 return k_start; 6173 } 6174 6175 //------------------------------get_original_key_start_from_aescrypt_object----------------------- 6176 Node * LibraryCallKit::get_original_key_start_from_aescrypt_object(Node *aescrypt_object) { 6177 Node* objAESCryptKey = load_field_from_object(aescrypt_object, "lastKey", "[B", /*is_exact*/ false); 6178 assert (objAESCryptKey != NULL, "wrong version of com.sun.crypto.provider.AESCrypt"); 6179 if (objAESCryptKey == NULL) return (Node *) NULL; 6180 6181 // now have the array, need to get the start address of the lastKey array 6182 objAESCryptKey = access_resolve(objAESCryptKey, ACCESS_READ); 6183 Node* original_k_start = array_element_address(objAESCryptKey, intcon(0), T_BYTE); 6184 return original_k_start; 6185 } 6186 6187 //----------------------------inline_cipherBlockChaining_AESCrypt_predicate---------------------------- 6188 // Return node representing slow path of predicate check. 6189 // the pseudo code we want to emulate with this predicate is: 6190 // for encryption: 6191 // if (embeddedCipherObj instanceof AESCrypt) do_intrinsic, else do_javapath 6192 // for decryption: 6193 // if ((embeddedCipherObj instanceof AESCrypt) && (cipher!=plain)) do_intrinsic, else do_javapath 6194 // note cipher==plain is more conservative than the original java code but that's OK 6195 // 6196 Node* LibraryCallKit::inline_cipherBlockChaining_AESCrypt_predicate(bool decrypting) { 6197 // The receiver was checked for NULL already. 6198 Node* objCBC = argument(0); 6199 6200 Node* src = argument(1); 6201 Node* dest = argument(4); 6202 6203 // Load embeddedCipher field of CipherBlockChaining object. 6204 Node* embeddedCipherObj = load_field_from_object(objCBC, "embeddedCipher", "Lcom/sun/crypto/provider/SymmetricCipher;", /*is_exact*/ false); 6205 6206 // get AESCrypt klass for instanceOf check 6207 // AESCrypt might not be loaded yet if some other SymmetricCipher got us to this compile point 6208 // will have same classloader as CipherBlockChaining object 6209 const TypeInstPtr* tinst = _gvn.type(objCBC)->isa_instptr(); 6210 assert(tinst != NULL, "CBCobj is null"); 6211 assert(tinst->klass()->is_loaded(), "CBCobj is not loaded"); 6212 6213 // we want to do an instanceof comparison against the AESCrypt class 6214 ciKlass* klass_AESCrypt = tinst->klass()->as_instance_klass()->find_klass(ciSymbol::make("com/sun/crypto/provider/AESCrypt")); 6215 if (!klass_AESCrypt->is_loaded()) { 6216 // if AESCrypt is not even loaded, we never take the intrinsic fast path 6217 Node* ctrl = control(); 6218 set_control(top()); // no regular fast path 6219 return ctrl; 6220 } 6221 6222 src = must_be_not_null(src, true); 6223 dest = must_be_not_null(dest, true); 6224 6225 // Resolve oops to stable for CmpP below. 6226 src = access_resolve(src, 0); 6227 dest = access_resolve(dest, 0); 6228 6229 ciInstanceKlass* instklass_AESCrypt = klass_AESCrypt->as_instance_klass(); 6230 6231 Node* instof = gen_instanceof(embeddedCipherObj, makecon(TypeKlassPtr::make(instklass_AESCrypt))); 6232 Node* cmp_instof = _gvn.transform(new CmpINode(instof, intcon(1))); 6233 Node* bool_instof = _gvn.transform(new BoolNode(cmp_instof, BoolTest::ne)); 6234 6235 Node* instof_false = generate_guard(bool_instof, NULL, PROB_MIN); 6236 6237 // for encryption, we are done 6238 if (!decrypting) 6239 return instof_false; // even if it is NULL 6240 6241 // for decryption, we need to add a further check to avoid 6242 // taking the intrinsic path when cipher and plain are the same 6243 // see the original java code for why. 6244 RegionNode* region = new RegionNode(3); 6245 region->init_req(1, instof_false); 6246 6247 Node* cmp_src_dest = _gvn.transform(new CmpPNode(src, dest)); 6248 Node* bool_src_dest = _gvn.transform(new BoolNode(cmp_src_dest, BoolTest::eq)); 6249 Node* src_dest_conjoint = generate_guard(bool_src_dest, NULL, PROB_MIN); 6250 region->init_req(2, src_dest_conjoint); 6251 6252 record_for_igvn(region); 6253 return _gvn.transform(region); 6254 } 6255 6256 //----------------------------inline_electronicCodeBook_AESCrypt_predicate---------------------------- 6257 // Return node representing slow path of predicate check. 6258 // the pseudo code we want to emulate with this predicate is: 6259 // for encryption: 6260 // if (embeddedCipherObj instanceof AESCrypt) do_intrinsic, else do_javapath 6261 // for decryption: 6262 // if ((embeddedCipherObj instanceof AESCrypt) && (cipher!=plain)) do_intrinsic, else do_javapath 6263 // note cipher==plain is more conservative than the original java code but that's OK 6264 // 6265 Node* LibraryCallKit::inline_electronicCodeBook_AESCrypt_predicate(bool decrypting) { 6266 // The receiver was checked for NULL already. 6267 Node* objECB = argument(0); 6268 6269 // Load embeddedCipher field of ElectronicCodeBook object. 6270 Node* embeddedCipherObj = load_field_from_object(objECB, "embeddedCipher", "Lcom/sun/crypto/provider/SymmetricCipher;", /*is_exact*/ false); 6271 6272 // get AESCrypt klass for instanceOf check 6273 // AESCrypt might not be loaded yet if some other SymmetricCipher got us to this compile point 6274 // will have same classloader as ElectronicCodeBook object 6275 const TypeInstPtr* tinst = _gvn.type(objECB)->isa_instptr(); 6276 assert(tinst != NULL, "ECBobj is null"); 6277 assert(tinst->klass()->is_loaded(), "ECBobj is not loaded"); 6278 6279 // we want to do an instanceof comparison against the AESCrypt class 6280 ciKlass* klass_AESCrypt = tinst->klass()->as_instance_klass()->find_klass(ciSymbol::make("com/sun/crypto/provider/AESCrypt")); 6281 if (!klass_AESCrypt->is_loaded()) { 6282 // if AESCrypt is not even loaded, we never take the intrinsic fast path 6283 Node* ctrl = control(); 6284 set_control(top()); // no regular fast path 6285 return ctrl; 6286 } 6287 ciInstanceKlass* instklass_AESCrypt = klass_AESCrypt->as_instance_klass(); 6288 6289 Node* instof = gen_instanceof(embeddedCipherObj, makecon(TypeKlassPtr::make(instklass_AESCrypt))); 6290 Node* cmp_instof = _gvn.transform(new CmpINode(instof, intcon(1))); 6291 Node* bool_instof = _gvn.transform(new BoolNode(cmp_instof, BoolTest::ne)); 6292 6293 Node* instof_false = generate_guard(bool_instof, NULL, PROB_MIN); 6294 6295 // for encryption, we are done 6296 if (!decrypting) 6297 return instof_false; // even if it is NULL 6298 6299 // for decryption, we need to add a further check to avoid 6300 // taking the intrinsic path when cipher and plain are the same 6301 // see the original java code for why. 6302 RegionNode* region = new RegionNode(3); 6303 region->init_req(1, instof_false); 6304 Node* src = argument(1); 6305 Node* dest = argument(4); 6306 Node* cmp_src_dest = _gvn.transform(new CmpPNode(src, dest)); 6307 Node* bool_src_dest = _gvn.transform(new BoolNode(cmp_src_dest, BoolTest::eq)); 6308 Node* src_dest_conjoint = generate_guard(bool_src_dest, NULL, PROB_MIN); 6309 region->init_req(2, src_dest_conjoint); 6310 6311 record_for_igvn(region); 6312 return _gvn.transform(region); 6313 } 6314 6315 //----------------------------inline_counterMode_AESCrypt_predicate---------------------------- 6316 // Return node representing slow path of predicate check. 6317 // the pseudo code we want to emulate with this predicate is: 6318 // for encryption: 6319 // if (embeddedCipherObj instanceof AESCrypt) do_intrinsic, else do_javapath 6320 // for decryption: 6321 // if ((embeddedCipherObj instanceof AESCrypt) && (cipher!=plain)) do_intrinsic, else do_javapath 6322 // note cipher==plain is more conservative than the original java code but that's OK 6323 // 6324 6325 Node* LibraryCallKit::inline_counterMode_AESCrypt_predicate() { 6326 // The receiver was checked for NULL already. 6327 Node* objCTR = argument(0); 6328 6329 // Load embeddedCipher field of CipherBlockChaining object. 6330 Node* embeddedCipherObj = load_field_from_object(objCTR, "embeddedCipher", "Lcom/sun/crypto/provider/SymmetricCipher;", /*is_exact*/ false); 6331 6332 // get AESCrypt klass for instanceOf check 6333 // AESCrypt might not be loaded yet if some other SymmetricCipher got us to this compile point 6334 // will have same classloader as CipherBlockChaining object 6335 const TypeInstPtr* tinst = _gvn.type(objCTR)->isa_instptr(); 6336 assert(tinst != NULL, "CTRobj is null"); 6337 assert(tinst->klass()->is_loaded(), "CTRobj is not loaded"); 6338 6339 // we want to do an instanceof comparison against the AESCrypt class 6340 ciKlass* klass_AESCrypt = tinst->klass()->as_instance_klass()->find_klass(ciSymbol::make("com/sun/crypto/provider/AESCrypt")); 6341 if (!klass_AESCrypt->is_loaded()) { 6342 // if AESCrypt is not even loaded, we never take the intrinsic fast path 6343 Node* ctrl = control(); 6344 set_control(top()); // no regular fast path 6345 return ctrl; 6346 } 6347 6348 ciInstanceKlass* instklass_AESCrypt = klass_AESCrypt->as_instance_klass(); 6349 Node* instof = gen_instanceof(embeddedCipherObj, makecon(TypeKlassPtr::make(instklass_AESCrypt))); 6350 Node* cmp_instof = _gvn.transform(new CmpINode(instof, intcon(1))); 6351 Node* bool_instof = _gvn.transform(new BoolNode(cmp_instof, BoolTest::ne)); 6352 Node* instof_false = generate_guard(bool_instof, NULL, PROB_MIN); 6353 6354 return instof_false; // even if it is NULL 6355 } 6356 6357 //------------------------------inline_ghash_processBlocks 6358 bool LibraryCallKit::inline_ghash_processBlocks() { 6359 address stubAddr; 6360 const char *stubName; 6361 assert(UseGHASHIntrinsics, "need GHASH intrinsics support"); 6362 6363 stubAddr = StubRoutines::ghash_processBlocks(); 6364 stubName = "ghash_processBlocks"; 6365 6366 Node* data = argument(0); 6367 Node* offset = argument(1); 6368 Node* len = argument(2); 6369 Node* state = argument(3); 6370 Node* subkeyH = argument(4); 6371 6372 state = must_be_not_null(state, true); 6373 subkeyH = must_be_not_null(subkeyH, true); 6374 data = must_be_not_null(data, true); 6375 6376 state = access_resolve(state, ACCESS_WRITE); 6377 subkeyH = access_resolve(subkeyH, ACCESS_READ); 6378 data = access_resolve(data, ACCESS_READ); 6379 6380 Node* state_start = array_element_address(state, intcon(0), T_LONG); 6381 assert(state_start, "state is NULL"); 6382 Node* subkeyH_start = array_element_address(subkeyH, intcon(0), T_LONG); 6383 assert(subkeyH_start, "subkeyH is NULL"); 6384 Node* data_start = array_element_address(data, offset, T_BYTE); 6385 assert(data_start, "data is NULL"); 6386 6387 Node* ghash = make_runtime_call(RC_LEAF|RC_NO_FP, 6388 OptoRuntime::ghash_processBlocks_Type(), 6389 stubAddr, stubName, TypePtr::BOTTOM, 6390 state_start, subkeyH_start, data_start, len); 6391 return true; 6392 } 6393 6394 bool LibraryCallKit::inline_base64_encodeBlock() { 6395 address stubAddr; 6396 const char *stubName; 6397 assert(UseBASE64Intrinsics, "need Base64 intrinsics support"); 6398 assert(callee()->signature()->size() == 6, "base64_encodeBlock has 6 parameters"); 6399 stubAddr = StubRoutines::base64_encodeBlock(); 6400 stubName = "encodeBlock"; 6401 6402 if (!stubAddr) return false; 6403 Node* base64obj = argument(0); 6404 Node* src = argument(1); 6405 Node* offset = argument(2); 6406 Node* len = argument(3); 6407 Node* dest = argument(4); 6408 Node* dp = argument(5); 6409 Node* isURL = argument(6); 6410 6411 src = must_be_not_null(src, true); 6412 src = access_resolve(src, ACCESS_READ); 6413 dest = must_be_not_null(dest, true); 6414 dest = access_resolve(dest, ACCESS_WRITE); 6415 6416 Node* src_start = array_element_address(src, intcon(0), T_BYTE); 6417 assert(src_start, "source array is NULL"); 6418 Node* dest_start = array_element_address(dest, intcon(0), T_BYTE); 6419 assert(dest_start, "destination array is NULL"); 6420 6421 Node* base64 = make_runtime_call(RC_LEAF, 6422 OptoRuntime::base64_encodeBlock_Type(), 6423 stubAddr, stubName, TypePtr::BOTTOM, 6424 src_start, offset, len, dest_start, dp, isURL); 6425 return true; 6426 } 6427 6428 //------------------------------inline_sha_implCompress----------------------- 6429 // 6430 // Calculate SHA (i.e., SHA-1) for single-block byte[] array. 6431 // void com.sun.security.provider.SHA.implCompress(byte[] buf, int ofs) 6432 // 6433 // Calculate SHA2 (i.e., SHA-244 or SHA-256) for single-block byte[] array. 6434 // void com.sun.security.provider.SHA2.implCompress(byte[] buf, int ofs) 6435 // 6436 // Calculate SHA5 (i.e., SHA-384 or SHA-512) for single-block byte[] array. 6437 // void com.sun.security.provider.SHA5.implCompress(byte[] buf, int ofs) 6438 // 6439 bool LibraryCallKit::inline_sha_implCompress(vmIntrinsics::ID id) { 6440 assert(callee()->signature()->size() == 2, "sha_implCompress has 2 parameters"); 6441 6442 Node* sha_obj = argument(0); 6443 Node* src = argument(1); // type oop 6444 Node* ofs = argument(2); // type int 6445 6446 const Type* src_type = src->Value(&_gvn); 6447 const TypeAryPtr* top_src = src_type->isa_aryptr(); 6448 if (top_src == NULL || top_src->klass() == NULL) { 6449 // failed array check 6450 return false; 6451 } 6452 // Figure out the size and type of the elements we will be copying. 6453 BasicType src_elem = src_type->isa_aryptr()->klass()->as_array_klass()->element_type()->basic_type(); 6454 if (src_elem != T_BYTE) { 6455 return false; 6456 } 6457 // 'src_start' points to src array + offset 6458 src = must_be_not_null(src, true); 6459 src = access_resolve(src, ACCESS_READ); 6460 Node* src_start = array_element_address(src, ofs, src_elem); 6461 Node* state = NULL; 6462 address stubAddr; 6463 const char *stubName; 6464 6465 switch(id) { 6466 case vmIntrinsics::_sha_implCompress: 6467 assert(UseSHA1Intrinsics, "need SHA1 instruction support"); 6468 state = get_state_from_sha_object(sha_obj); 6469 stubAddr = StubRoutines::sha1_implCompress(); 6470 stubName = "sha1_implCompress"; 6471 break; 6472 case vmIntrinsics::_sha2_implCompress: 6473 assert(UseSHA256Intrinsics, "need SHA256 instruction support"); 6474 state = get_state_from_sha_object(sha_obj); 6475 stubAddr = StubRoutines::sha256_implCompress(); 6476 stubName = "sha256_implCompress"; 6477 break; 6478 case vmIntrinsics::_sha5_implCompress: 6479 assert(UseSHA512Intrinsics, "need SHA512 instruction support"); 6480 state = get_state_from_sha5_object(sha_obj); 6481 stubAddr = StubRoutines::sha512_implCompress(); 6482 stubName = "sha512_implCompress"; 6483 break; 6484 default: 6485 fatal_unexpected_iid(id); 6486 return false; 6487 } 6488 if (state == NULL) return false; 6489 6490 assert(stubAddr != NULL, "Stub is generated"); 6491 if (stubAddr == NULL) return false; 6492 6493 // Call the stub. 6494 Node* call = make_runtime_call(RC_LEAF|RC_NO_FP, OptoRuntime::sha_implCompress_Type(), 6495 stubAddr, stubName, TypePtr::BOTTOM, 6496 src_start, state); 6497 6498 return true; 6499 } 6500 6501 //------------------------------inline_digestBase_implCompressMB----------------------- 6502 // 6503 // Calculate SHA/SHA2/SHA5 for multi-block byte[] array. 6504 // int com.sun.security.provider.DigestBase.implCompressMultiBlock(byte[] b, int ofs, int limit) 6505 // 6506 bool LibraryCallKit::inline_digestBase_implCompressMB(int predicate) { 6507 assert(UseSHA1Intrinsics || UseSHA256Intrinsics || UseSHA512Intrinsics, 6508 "need SHA1/SHA256/SHA512 instruction support"); 6509 assert((uint)predicate < 3, "sanity"); 6510 assert(callee()->signature()->size() == 3, "digestBase_implCompressMB has 3 parameters"); 6511 6512 Node* digestBase_obj = argument(0); // The receiver was checked for NULL already. 6513 Node* src = argument(1); // byte[] array 6514 Node* ofs = argument(2); // type int 6515 Node* limit = argument(3); // type int 6516 6517 const Type* src_type = src->Value(&_gvn); 6518 const TypeAryPtr* top_src = src_type->isa_aryptr(); 6519 if (top_src == NULL || top_src->klass() == NULL) { 6520 // failed array check 6521 return false; 6522 } 6523 // Figure out the size and type of the elements we will be copying. 6524 BasicType src_elem = src_type->isa_aryptr()->klass()->as_array_klass()->element_type()->basic_type(); 6525 if (src_elem != T_BYTE) { 6526 return false; 6527 } 6528 // 'src_start' points to src array + offset 6529 src = must_be_not_null(src, false); 6530 src = access_resolve(src, ACCESS_READ); 6531 Node* src_start = array_element_address(src, ofs, src_elem); 6532 6533 const char* klass_SHA_name = NULL; 6534 const char* stub_name = NULL; 6535 address stub_addr = NULL; 6536 bool long_state = false; 6537 6538 switch (predicate) { 6539 case 0: 6540 if (UseSHA1Intrinsics) { 6541 klass_SHA_name = "sun/security/provider/SHA"; 6542 stub_name = "sha1_implCompressMB"; 6543 stub_addr = StubRoutines::sha1_implCompressMB(); 6544 } 6545 break; 6546 case 1: 6547 if (UseSHA256Intrinsics) { 6548 klass_SHA_name = "sun/security/provider/SHA2"; 6549 stub_name = "sha256_implCompressMB"; 6550 stub_addr = StubRoutines::sha256_implCompressMB(); 6551 } 6552 break; 6553 case 2: 6554 if (UseSHA512Intrinsics) { 6555 klass_SHA_name = "sun/security/provider/SHA5"; 6556 stub_name = "sha512_implCompressMB"; 6557 stub_addr = StubRoutines::sha512_implCompressMB(); 6558 long_state = true; 6559 } 6560 break; 6561 default: 6562 fatal("unknown SHA intrinsic predicate: %d", predicate); 6563 } 6564 if (klass_SHA_name != NULL) { 6565 assert(stub_addr != NULL, "Stub is generated"); 6566 if (stub_addr == NULL) return false; 6567 6568 // get DigestBase klass to lookup for SHA klass 6569 const TypeInstPtr* tinst = _gvn.type(digestBase_obj)->isa_instptr(); 6570 assert(tinst != NULL, "digestBase_obj is not instance???"); 6571 assert(tinst->klass()->is_loaded(), "DigestBase is not loaded"); 6572 6573 ciKlass* klass_SHA = tinst->klass()->as_instance_klass()->find_klass(ciSymbol::make(klass_SHA_name)); 6574 assert(klass_SHA->is_loaded(), "predicate checks that this class is loaded"); 6575 ciInstanceKlass* instklass_SHA = klass_SHA->as_instance_klass(); 6576 return inline_sha_implCompressMB(digestBase_obj, instklass_SHA, long_state, stub_addr, stub_name, src_start, ofs, limit); 6577 } 6578 return false; 6579 } 6580 //------------------------------inline_sha_implCompressMB----------------------- 6581 bool LibraryCallKit::inline_sha_implCompressMB(Node* digestBase_obj, ciInstanceKlass* instklass_SHA, 6582 bool long_state, address stubAddr, const char *stubName, 6583 Node* src_start, Node* ofs, Node* limit) { 6584 const TypeKlassPtr* aklass = TypeKlassPtr::make(instklass_SHA); 6585 const TypeOopPtr* xtype = aklass->as_instance_type(); 6586 Node* sha_obj = new CheckCastPPNode(control(), digestBase_obj, xtype); 6587 sha_obj = _gvn.transform(sha_obj); 6588 6589 Node* state; 6590 if (long_state) { 6591 state = get_state_from_sha5_object(sha_obj); 6592 } else { 6593 state = get_state_from_sha_object(sha_obj); 6594 } 6595 if (state == NULL) return false; 6596 6597 // Call the stub. 6598 Node* call = make_runtime_call(RC_LEAF|RC_NO_FP, 6599 OptoRuntime::digestBase_implCompressMB_Type(), 6600 stubAddr, stubName, TypePtr::BOTTOM, 6601 src_start, state, ofs, limit); 6602 // return ofs (int) 6603 Node* result = _gvn.transform(new ProjNode(call, TypeFunc::Parms)); 6604 set_result(result); 6605 6606 return true; 6607 } 6608 6609 //------------------------------get_state_from_sha_object----------------------- 6610 Node * LibraryCallKit::get_state_from_sha_object(Node *sha_object) { 6611 Node* sha_state = load_field_from_object(sha_object, "state", "[I", /*is_exact*/ false); 6612 assert (sha_state != NULL, "wrong version of sun.security.provider.SHA/SHA2"); 6613 if (sha_state == NULL) return (Node *) NULL; 6614 6615 // now have the array, need to get the start address of the state array 6616 sha_state = access_resolve(sha_state, ACCESS_WRITE); 6617 Node* state = array_element_address(sha_state, intcon(0), T_INT); 6618 return state; 6619 } 6620 6621 //------------------------------get_state_from_sha5_object----------------------- 6622 Node * LibraryCallKit::get_state_from_sha5_object(Node *sha_object) { 6623 Node* sha_state = load_field_from_object(sha_object, "state", "[J", /*is_exact*/ false); 6624 assert (sha_state != NULL, "wrong version of sun.security.provider.SHA5"); 6625 if (sha_state == NULL) return (Node *) NULL; 6626 6627 // now have the array, need to get the start address of the state array 6628 sha_state = access_resolve(sha_state, ACCESS_WRITE); 6629 Node* state = array_element_address(sha_state, intcon(0), T_LONG); 6630 return state; 6631 } 6632 6633 //----------------------------inline_digestBase_implCompressMB_predicate---------------------------- 6634 // Return node representing slow path of predicate check. 6635 // the pseudo code we want to emulate with this predicate is: 6636 // if (digestBaseObj instanceof SHA/SHA2/SHA5) do_intrinsic, else do_javapath 6637 // 6638 Node* LibraryCallKit::inline_digestBase_implCompressMB_predicate(int predicate) { 6639 assert(UseSHA1Intrinsics || UseSHA256Intrinsics || UseSHA512Intrinsics, 6640 "need SHA1/SHA256/SHA512 instruction support"); 6641 assert((uint)predicate < 3, "sanity"); 6642 6643 // The receiver was checked for NULL already. 6644 Node* digestBaseObj = argument(0); 6645 6646 // get DigestBase klass for instanceOf check 6647 const TypeInstPtr* tinst = _gvn.type(digestBaseObj)->isa_instptr(); 6648 assert(tinst != NULL, "digestBaseObj is null"); 6649 assert(tinst->klass()->is_loaded(), "DigestBase is not loaded"); 6650 6651 const char* klass_SHA_name = NULL; 6652 switch (predicate) { 6653 case 0: 6654 if (UseSHA1Intrinsics) { 6655 // we want to do an instanceof comparison against the SHA class 6656 klass_SHA_name = "sun/security/provider/SHA"; 6657 } 6658 break; 6659 case 1: 6660 if (UseSHA256Intrinsics) { 6661 // we want to do an instanceof comparison against the SHA2 class 6662 klass_SHA_name = "sun/security/provider/SHA2"; 6663 } 6664 break; 6665 case 2: 6666 if (UseSHA512Intrinsics) { 6667 // we want to do an instanceof comparison against the SHA5 class 6668 klass_SHA_name = "sun/security/provider/SHA5"; 6669 } 6670 break; 6671 default: 6672 fatal("unknown SHA intrinsic predicate: %d", predicate); 6673 } 6674 6675 ciKlass* klass_SHA = NULL; 6676 if (klass_SHA_name != NULL) { 6677 klass_SHA = tinst->klass()->as_instance_klass()->find_klass(ciSymbol::make(klass_SHA_name)); 6678 } 6679 if ((klass_SHA == NULL) || !klass_SHA->is_loaded()) { 6680 // if none of SHA/SHA2/SHA5 is loaded, we never take the intrinsic fast path 6681 Node* ctrl = control(); 6682 set_control(top()); // no intrinsic path 6683 return ctrl; 6684 } 6685 ciInstanceKlass* instklass_SHA = klass_SHA->as_instance_klass(); 6686 6687 Node* instofSHA = gen_instanceof(digestBaseObj, makecon(TypeKlassPtr::make(instklass_SHA))); 6688 Node* cmp_instof = _gvn.transform(new CmpINode(instofSHA, intcon(1))); 6689 Node* bool_instof = _gvn.transform(new BoolNode(cmp_instof, BoolTest::ne)); 6690 Node* instof_false = generate_guard(bool_instof, NULL, PROB_MIN); 6691 6692 return instof_false; // even if it is NULL 6693 } 6694 6695 //-------------inline_fma----------------------------------- 6696 bool LibraryCallKit::inline_fma(vmIntrinsics::ID id) { 6697 Node *a = NULL; 6698 Node *b = NULL; 6699 Node *c = NULL; 6700 Node* result = NULL; 6701 switch (id) { 6702 case vmIntrinsics::_fmaD: 6703 assert(callee()->signature()->size() == 6, "fma has 3 parameters of size 2 each."); 6704 // no receiver since it is static method 6705 a = round_double_node(argument(0)); 6706 b = round_double_node(argument(2)); 6707 c = round_double_node(argument(4)); 6708 result = _gvn.transform(new FmaDNode(control(), a, b, c)); 6709 break; 6710 case vmIntrinsics::_fmaF: 6711 assert(callee()->signature()->size() == 3, "fma has 3 parameters of size 1 each."); 6712 a = argument(0); 6713 b = argument(1); 6714 c = argument(2); 6715 result = _gvn.transform(new FmaFNode(control(), a, b, c)); 6716 break; 6717 default: 6718 fatal_unexpected_iid(id); break; 6719 } 6720 set_result(result); 6721 return true; 6722 } 6723 6724 bool LibraryCallKit::inline_character_compare(vmIntrinsics::ID id) { 6725 // argument(0) is receiver 6726 Node* codePoint = argument(1); 6727 Node* n = NULL; 6728 6729 switch (id) { 6730 case vmIntrinsics::_isDigit : 6731 n = new DigitNode(control(), codePoint); 6732 break; 6733 case vmIntrinsics::_isLowerCase : 6734 n = new LowerCaseNode(control(), codePoint); 6735 break; 6736 case vmIntrinsics::_isUpperCase : 6737 n = new UpperCaseNode(control(), codePoint); 6738 break; 6739 case vmIntrinsics::_isWhitespace : 6740 n = new WhitespaceNode(control(), codePoint); 6741 break; 6742 default: 6743 fatal_unexpected_iid(id); 6744 } 6745 6746 set_result(_gvn.transform(n)); 6747 return true; 6748 } 6749 6750 //------------------------------inline_fp_min_max------------------------------ 6751 bool LibraryCallKit::inline_fp_min_max(vmIntrinsics::ID id) { 6752 /* DISABLED BECAUSE METHOD DATA ISN'T COLLECTED PER CALL-SITE, SEE JDK-8015416. 6753 6754 // The intrinsic should be used only when the API branches aren't predictable, 6755 // the last one performing the most important comparison. The following heuristic 6756 // uses the branch statistics to eventually bail out if necessary. 6757 6758 ciMethodData *md = callee()->method_data(); 6759 6760 if ( md != NULL && md->is_mature() && md->invocation_count() > 0 ) { 6761 ciCallProfile cp = caller()->call_profile_at_bci(bci()); 6762 6763 if ( ((double)cp.count()) / ((double)md->invocation_count()) < 0.8 ) { 6764 // Bail out if the call-site didn't contribute enough to the statistics. 6765 return false; 6766 } 6767 6768 uint taken = 0, not_taken = 0; 6769 6770 for (ciProfileData *p = md->first_data(); md->is_valid(p); p = md->next_data(p)) { 6771 if (p->is_BranchData()) { 6772 taken = ((ciBranchData*)p)->taken(); 6773 not_taken = ((ciBranchData*)p)->not_taken(); 6774 } 6775 } 6776 6777 double balance = (((double)taken) - ((double)not_taken)) / ((double)md->invocation_count()); 6778 balance = balance < 0 ? -balance : balance; 6779 if ( balance > 0.2 ) { 6780 // Bail out if the most important branch is predictable enough. 6781 return false; 6782 } 6783 } 6784 */ 6785 6786 Node *a = NULL; 6787 Node *b = NULL; 6788 Node *n = NULL; 6789 switch (id) { 6790 case vmIntrinsics::_maxF: 6791 case vmIntrinsics::_minF: 6792 assert(callee()->signature()->size() == 2, "minF/maxF has 2 parameters of size 1 each."); 6793 a = argument(0); 6794 b = argument(1); 6795 break; 6796 case vmIntrinsics::_maxD: 6797 case vmIntrinsics::_minD: 6798 assert(callee()->signature()->size() == 4, "minD/maxD has 2 parameters of size 2 each."); 6799 a = round_double_node(argument(0)); 6800 b = round_double_node(argument(2)); 6801 break; 6802 default: 6803 fatal_unexpected_iid(id); 6804 break; 6805 } 6806 switch (id) { 6807 case vmIntrinsics::_maxF: n = new MaxFNode(a, b); break; 6808 case vmIntrinsics::_minF: n = new MinFNode(a, b); break; 6809 case vmIntrinsics::_maxD: n = new MaxDNode(a, b); break; 6810 case vmIntrinsics::_minD: n = new MinDNode(a, b); break; 6811 default: fatal_unexpected_iid(id); break; 6812 } 6813 set_result(_gvn.transform(n)); 6814 return true; 6815 } 6816 6817 bool LibraryCallKit::inline_profileBoolean() { 6818 Node* counts = argument(1); 6819 const TypeAryPtr* ary = NULL; 6820 ciArray* aobj = NULL; 6821 if (counts->is_Con() 6822 && (ary = counts->bottom_type()->isa_aryptr()) != NULL 6823 && (aobj = ary->const_oop()->as_array()) != NULL 6824 && (aobj->length() == 2)) { 6825 // Profile is int[2] where [0] and [1] correspond to false and true value occurrences respectively. 6826 jint false_cnt = aobj->element_value(0).as_int(); 6827 jint true_cnt = aobj->element_value(1).as_int(); 6828 6829 if (C->log() != NULL) { 6830 C->log()->elem("observe source='profileBoolean' false='%d' true='%d'", 6831 false_cnt, true_cnt); 6832 } 6833 6834 if (false_cnt + true_cnt == 0) { 6835 // According to profile, never executed. 6836 uncommon_trap_exact(Deoptimization::Reason_intrinsic, 6837 Deoptimization::Action_reinterpret); 6838 return true; 6839 } 6840 6841 // result is a boolean (0 or 1) and its profile (false_cnt & true_cnt) 6842 // is a number of each value occurrences. 6843 Node* result = argument(0); 6844 if (false_cnt == 0 || true_cnt == 0) { 6845 // According to profile, one value has been never seen. 6846 int expected_val = (false_cnt == 0) ? 1 : 0; 6847 6848 Node* cmp = _gvn.transform(new CmpINode(result, intcon(expected_val))); 6849 Node* test = _gvn.transform(new BoolNode(cmp, BoolTest::eq)); 6850 6851 IfNode* check = create_and_map_if(control(), test, PROB_ALWAYS, COUNT_UNKNOWN); 6852 Node* fast_path = _gvn.transform(new IfTrueNode(check)); 6853 Node* slow_path = _gvn.transform(new IfFalseNode(check)); 6854 6855 { // Slow path: uncommon trap for never seen value and then reexecute 6856 // MethodHandleImpl::profileBoolean() to bump the count, so JIT knows 6857 // the value has been seen at least once. 6858 PreserveJVMState pjvms(this); 6859 PreserveReexecuteState preexecs(this); 6860 jvms()->set_should_reexecute(true); 6861 6862 set_control(slow_path); 6863 set_i_o(i_o()); 6864 6865 uncommon_trap_exact(Deoptimization::Reason_intrinsic, 6866 Deoptimization::Action_reinterpret); 6867 } 6868 // The guard for never seen value enables sharpening of the result and 6869 // returning a constant. It allows to eliminate branches on the same value 6870 // later on. 6871 set_control(fast_path); 6872 result = intcon(expected_val); 6873 } 6874 // Stop profiling. 6875 // MethodHandleImpl::profileBoolean() has profiling logic in its bytecode. 6876 // By replacing method body with profile data (represented as ProfileBooleanNode 6877 // on IR level) we effectively disable profiling. 6878 // It enables full speed execution once optimized code is generated. 6879 Node* profile = _gvn.transform(new ProfileBooleanNode(result, false_cnt, true_cnt)); 6880 C->record_for_igvn(profile); 6881 set_result(profile); 6882 return true; 6883 } else { 6884 // Continue profiling. 6885 // Profile data isn't available at the moment. So, execute method's bytecode version. 6886 // Usually, when GWT LambdaForms are profiled it means that a stand-alone nmethod 6887 // is compiled and counters aren't available since corresponding MethodHandle 6888 // isn't a compile-time constant. 6889 return false; 6890 } 6891 } 6892 6893 bool LibraryCallKit::inline_isCompileConstant() { 6894 Node* n = argument(0); 6895 set_result(n->is_Con() ? intcon(1) : intcon(0)); 6896 return true; 6897 }